feat: test4 genesis.json and suggested config.toml (#2508)

## Description

This PR adds the **test4** `genesis.json` and suggested `config.toml`.
It also includes a relevant README to highlight important `config.toml`
params.

⚠️  **IMPORTANT** ⚠️ 

You can view the genesis transactions that differ from the examples
folder here:

dev/zivkovicmilos/test4-genesis...dev/zivkovicmilos/test4-genesis-prepared

In case anyone is curious, I extracted the bech32 representation of the
public keys from the `genesis.json` using this script:

```go
package main

import (
	"fmt"

	_ "github.com/gnolang/gno/gno.land/pkg/gnoland"
	"github.com/gnolang/gno/tm2/pkg/bft/types"
)

func main() {
	path := "../gno/misc/deployments/test4.gno.land/genesis.json"

	doc, err := types.GenesisDocFromFile(path)
	if err != nil {
		panic(err)
	}

	for _, v := range doc.Validators {
		fmt.Printf("Name: %s\n", v.Name)
		fmt.Printf("Address: %s\n", v.Address)
		fmt.Printf("PubKey: %s\n", v.PubKey.String())

		fmt.Printf("\n===========================\n\n")
	}
}
```

<details><summary>Contributors' checklist...</summary>

- [x] Added new tests, or not needed, or not feasible
- [x] Provided an example (e.g. screenshot) to aid review or the PR is
self-explanatory
- [x] Updated the official documentation or not needed
- [x] No breaking changes were made, or a `BREAKING CHANGE: xxx` message
was included in the description
- [ ] Added references to related issues and PRs
- [ ] Provided any useful hints for running manual tests
- [ ] Added new benchmarks to [generated
graphs](https://gnoland.github.io/benchmarks), if any. More info
[here](https://github.com/gnolang/gno/blob/master/.benchmarks/README.md).
</details>

---------

Co-authored-by: Manfred Touron <[email protected]>
Co-authored-by: Salvatore Mazzarino <[email protected]>
Co-authored-by: Blake <[email protected]>

misc/deployments/test4.gno.land/README.md

@@ -0,0 +1,40 @@
+## Overview
+
+This deployment folder contains minimal information needed to launch a full test4.gno.land validator node.
+
+## `genesis.json`
+
+The initial `genesis.json` validator set is consisted of 3 entities (7 validators in total):
+
+- Gno Core - the gno core team (**4 validators**)
+- Gno DevX - the gno devX team (**2 validators**)
+- Onbloc - the [Onbloc](https://onbloc.xyz/) team (**1 validator**)
+
+Subsequent validators will be added through the governance mechanism in govdao, employing a preliminary simplified
+version Proof of Contribution.
+
+The addresses premined belong to different faucet accounts, validator entities and implementation partners.
+
+## `config.toml`
+
+The `config.toml` located in this directory is a **_guideline_**, and not a definitive configuration on how
+all nodes should be configured in the network.
+
+### Important params
+
+Some configuration params are required, while others are advised to be set.
+
+- `moniker` - the recognizable identifier of the node.
+- `consensus.timeout_commit` - the timeout value after the consensus commit phase. ⚠️ **Required to be `2s`** ⚠️.
+- `mempool.size` - the maximum number of txs in the mempool. **Advised to be `10000`**.
+- `p2p.laddr` - the listen address for P2P traffic, **specific to every node deployment**. It is advised to use a
+  reverse-proxy, and keep this value at `tcp://0.0.0.0:<port>`.
+- `p2p.max_num_outbound_peers` - the max number of outbound peer connections. **Advised to be `40`**.
+- `p2p.persistent_peers` - the persistent peers. ⚠️ **Required to be `TODO: add p2p addresses`** ⚠️.
+- `p2p.pex` - if using a sentry node architecture, should be `false`. **If not, please set to `true`**.
+- `p2p.external_address` - the advertised peer dial address. If empty, will use the same port as the `p2p.laddr`. This
+  value should be **changed to `{{ your_ip_address }}:26656`**
+- `rpc.laddr` - the JSON-RPC listen address, **specific to every node deployment**.
+- `telemetry.enabled` - flag indicating if telemetry should be turned on. **Advised to be `true`**.
+- `telemetry.exporter_endpoint` - endpoint for the otel exported. ⚠️ **Required if `telemetry.enabled=true`** ⚠️.
+- `telemetry.service_instance_id` - unique ID of the node telemetry instance, **specific to every node deployment**.

misc/deployments/test4.gno.land/config.toml

@@ -0,0 +1,247 @@
+
+# Mechanism to connect to the ABCI application: socket | grpc
+abci = "socket"
+
+# Database backend: goleveldb | boltdb
+# * goleveldb (github.com/syndtr/goleveldb - most popular implementation)
+#  - pure go
+#  - stable
+#* boltdb (uses etcd's fork of bolt - go.etcd.io/bbolt)
+#  - EXPERIMENTAL
+#  - may be faster is some use-cases (random reads - indexer)
+#  - use boltdb build tag (go build -tags boltdb)
+db_backend = "goleveldb"
+
+# Database directory
+db_dir = "db"
+
+# If this node is many blocks behind the tip of the chain, FastSync
+# allows them to catchup quickly by downloading blocks in parallel
+# and verifying their commits
+fast_sync = true
+
+# If true, query the ABCI app on connecting to a new peer
+# so the app can decide if we should keep the connection or not
+filter_peers = false
+home = ""
+
+# A custom human readable name for this node
+moniker = "artemis.local" # Change me!
+
+# Path to the JSON file containing the private key to use for node authentication in the p2p protocol
+node_key_file = "secrets/node_key.json"
+
+# Path to the JSON file containing the private key to use as a validator in the consensus protocol
+priv_validator_key_file = "secrets/priv_validator_key.json"
+
+# TCP or UNIX socket address for Tendermint to listen on for
+# connections from an external PrivValidator process
+priv_validator_laddr = ""
+
+# Path to the JSON file containing the last sign state of a validator
+priv_validator_state_file = "secrets/priv_validator_state.json"
+
+# TCP or UNIX socket address for the profiling server to listen on
+prof_laddr = ""
+
+# TCP or UNIX socket address of the ABCI application, 
+# or the name of an ABCI application compiled in with the Tendermint binary
+proxy_app = "tcp://127.0.0.1:26658"
+
+##### consensus configuration options #####
+[consensus]
+
+  # EmptyBlocks mode and possible interval between empty blocks
+  create_empty_blocks = true
+  create_empty_blocks_interval = "0s"
+  home = ""
+
+  # Reactor sleep duration parameters
+  peer_gossip_sleep_duration = "100ms"
+  peer_query_maj23_sleep_duration = "2s"
+
+  # Make progress as soon as we have all the precommits (as if TimeoutCommit = 0)
+  skip_timeout_commit = false
+  timeout_commit = "2s" # Do NOT change me, leave me at 2s!
+  timeout_precommit = "1s"
+  timeout_precommit_delta = "500ms"
+  timeout_prevote = "1s"
+  timeout_prevote_delta = "500ms"
+  timeout_propose = "3s"
+  timeout_propose_delta = "500ms"
+  wal_file = "wal/cs.wal/wal"
+
+##### mempool configuration options #####
+[mempool]
+  broadcast = true
+
+  # Size of the cache (used to filter transactions we saw earlier) in transactions
+  cache_size = 10000
+  home = ""
+
+  # Limit the total size of all txs in the mempool.
+  # This only accounts for raw transactions (e.g. given 1MB transactions and
+  # max_txs_bytes=5MB, mempool will only accept 5 transactions).
+  max_pending_txs_bytes = 1073741824 # ~1GB
+  recheck = true
+
+  # Maximum number of transactions in the mempool
+  size = 10000 # Advised value is 10000
+  wal_dir = ""
+
+##### peer to peer configuration options #####
+[p2p]
+
+  # Toggle to disable guard against peers connecting from the same ip.
+  allow_duplicate_ip = false
+  dial_timeout = "3s"
+
+  # Address to advertise to peers for them to dial
+  # If empty, will use the same port as the laddr,
+  # and will introspect on the listener or use UPnP
+  # to figure out the address.
+  external_address = "" # Change me!
+
+  # Time to wait before flushing messages out on the connection
+  flush_throttle_timeout = "100ms"
+
+  # Peer connection configuration.
+  handshake_timeout = "20s"
+  home = ""
+
+  # Address to listen for incoming connections
+  laddr = "tcp://0.0.0.0:26656" # Change me!
+
+  # Maximum number of inbound peers
+  max_num_inbound_peers = 40
+
+  # Maximum number of outbound peers to connect to, excluding persistent peers
+  max_num_outbound_peers = 40 # Advised value is 40
+
+  # Maximum size of a message packet payload, in bytes
+  max_packet_msg_payload_size = 1024
+
+  # Comma separated list of nodes to keep persistent connections to
+  persistent_peers = ""
+
+  # Set true to enable the peer-exchange reactor
+  pex = false # Should be `false` if using a sentry node. Otherwise `true`!
+
+  # Comma separated list of peer IDs to keep private (will not be gossiped to other peers)
+  private_peer_ids = ""
+
+  # Rate at which packets can be received, in bytes/second
+  recv_rate = 5120000
+
+  # Seed mode, in which node constantly crawls the network and looks for
+  # peers. If another node asks it for addresses, it responds and disconnects.
+  #
+  # Does not work if the peer-exchange reactor is disabled.
+  seed_mode = false
+
+  # Comma separated list of seed nodes to connect to
+  seeds = ""
+
+  # Rate at which packets can be sent, in bytes/second
+  send_rate = 5120000
+  test_dial_fail = false
+  test_fuzz = false
+
+  # UPNP port forwarding
+  upnp = false
+
+  [p2p.test_fuzz_config]
+    MaxDelay = "3s"
+    Mode = 0
+    ProbDropConn = 0.0
+    ProbDropRW = 0.2
+    ProbSleep = 0.0
+
+##### rpc server configuration options #####
+[rpc]
+
+  # A list of non simple headers the client is allowed to use with cross-domain requests
+  cors_allowed_headers = ["Origin", "Accept", "Content-Type", "X-Requested-With", "X-Server-Time"]
+
+  # A list of methods the client is allowed to use with cross-domain requests
+  cors_allowed_methods = ["HEAD", "GET", "POST", "OPTIONS"]
+
+  # A list of origins a cross-domain request can be executed from
+  # Default value '[]' disables cors support
+  # Use '["*"]' to allow any origin
+  cors_allowed_origins = ["*"]
+
+  # TCP or UNIX socket address for the gRPC server to listen on
+  # NOTE: This server only supports /broadcast_tx_commit
+  grpc_laddr = ""
+
+  # Maximum number of simultaneous connections.
+  # Does not include RPC (HTTP&WebSocket) connections. See max_open_connections
+  # If you want to accept a larger number than the default, make sure
+  # you increase your OS limits.
+  # 0 - unlimited.
+  # Should be < {ulimit -Sn} - {MaxNumInboundPeers} - {MaxNumOutboundPeers} - {N of wal, db and other open files}
+  # 1024 - 40 - 10 - 50 = 924 = ~900
+  grpc_max_open_connections = 900
+  home = ""
+
+  # TCP or UNIX socket address for the RPC server to listen on
+  laddr = "tcp://0.0.0.0:26657" # Please use a reverse proxy!
+
+  # Maximum size of request body, in bytes
+  max_body_bytes = 1000000
+
+  # Maximum size of request header, in bytes
+  max_header_bytes = 1048576
+
+  # Maximum number of simultaneous connections (including WebSocket).
+  # Does not include gRPC connections. See grpc_max_open_connections
+  # If you want to accept a larger number than the default, make sure
+  # you increase your OS limits.
+  # 0 - unlimited.
+  # Should be < {ulimit -Sn} - {MaxNumInboundPeers} - {MaxNumOutboundPeers} - {N of wal, db and other open files}
+  # 1024 - 40 - 10 - 50 = 924 = ~900
+  max_open_connections = 900
+
+  # How long to wait for a tx to be committed during /broadcast_tx_commit.
+  # WARNING: Using a value larger than 10s will result in increasing the
+  # global HTTP write timeout, which applies to all connections and endpoints.
+  # See https://github.com/tendermint/classic/issues/3435
+  timeout_broadcast_tx_commit = "10s"
+
+  # The path to a file containing certificate that is used to create the HTTPS server.
+  # Might be either absolute path or path related to tendermint's config directory.
+  # If the certificate is signed by a certificate authority,
+  # the certFile should be the concatenation of the server's certificate, any intermediates,
+  # and the CA's certificate.
+  # NOTE: both tls_cert_file and tls_key_file must be present for Tendermint to create HTTPS server. Otherwise, HTTP server is run.
+  tls_cert_file = ""
+
+  # The path to a file containing matching private key that is used to create the HTTPS server.
+  # Might be either absolute path or path related to tendermint's config directory.
+  # NOTE: both tls_cert_file and tls_key_file must be present for Tendermint to create HTTPS server. Otherwise, HTTP server is run.
+  tls_key_file = ""
+
+  # Activate unsafe RPC commands like /dial_seeds and /unsafe_flush_mempool
+  unsafe = false
+
+##### node telemetry #####
+[telemetry]
+  enabled = true # Advised to be `true`
+
+  # the endpoint to export metrics to, like a local OpenTelemetry collector
+  exporter_endpoint = "" # Change me to the OTEL endpoint!
+  meter_name = "test4.gno.land"
+
+  # the ID helps to distinguish instances of the same service that exist at the same time (e.g. instances of a horizontally scaled service)
+  service_instance_id = "gno-node-1"
+  service_name = "gno.land"
+
+##### event store #####
+[tx_event_store]
+
+  # Type of event store
+  event_store_type = "none"
+
+  # Event store parameters
+  [tx_event_store.event_store_params]