Load polkadot chainTypes from remote registry

[jiqiang90]

Prerequisites

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Description

Substrate Sdk are often facing difficulties decode a historical block, especially when polkadot dependencies upgrade and chainTypes changes.
With fixed chainTypes require user republish their project, and might reindex on the subquery network.

We propose to include a remote chainTypes registry, similar to https://github.com/polkadot-js/apps/tree/e9103aa8096bde20ccd4397aab2265f3e338d6d3/packages/apps-config/src/api/spec, but apply with different version of polkadotjs. In this way :

1. sdk could load chainTypes dynamiclly, so with chainType changes no need to create new deplpyment.
2. Reduce the chance of deployment break with change of different version sdk.

Details

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Local Environment: [You can get this information from executing subql version.]
Query Version: [What is the version of the query service?]
Indexer Version: [What is the version of the indexer service?]
Network Details:

• [Network]
• [Block height, a block height where the issue is happening]
• [Dictionary endpoint, if used]

Steps to Reproduce

1. [First Step]
2. [Second Step]
3. [and so on...]

Example project: [A link to a minimal example that can reproduce the issue]

Expected behavior: [What you expected to happen]

Actual behavior: [What actually happened]

Any other information

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