feat: include archived features as a filter option for the /api/admin/projects/*/features endpoint

[kim-anchorzero]

Describe the bug

The documentation for this endpoint (https://docs.getunleash.io/reference/api/unleash/get-features) suggests that archived features will be returned (by virtue of the archived/archivedAt attributes) but these are omitted from results.

Steps to reproduce the bug

• from the admin ui add a feature test in default project
• execute request for /api/admin/projects/default/features
• note the feature is there
• from the admin ui archive the test feature
• execute request for /api/admin/projects/default/features
• note that you get no features returned

Expected behavior

Archived features are returned with the appropriate attributes.

Logs, error output, etc.

When feature is not archived:

{
  "version": 2,
  "features": [
    {
      "type": "release",
      "description": null,
      "name": "test",
      "createdAt": "2024-08-14T16:48:55.487Z",
      "stale": false,
      "impressionData": false,
      "lastSeenAt": null,
      "environments": [
        {
          "name": "development",
          "enabled": false,
          "type": "development",
          "sortOrder": 2,
          "variantCount": 0,
          "lastSeenAt": null,
          "hasStrategies": false,
          "hasEnabledStrategies": false
        },
        {
          "name": "production",
          "enabled": false,
          "type": "production",
          "sortOrder": 3,
          "variantCount": 0,
          "lastSeenAt": null,
          "hasStrategies": false,
          "hasEnabledStrategies": false
        }
      ]
    }
  ]
}


after it's archived:
```json
{
  "version": 2,
  "features": []
}

### Screenshots

_No response_

### Additional context

_No response_

### Unleash version

6.1.12

### Subscription type

None

### Hosting type

Self-hosted

### SDK information (language and version)

_No response_

[ivarconr]

Hi @kim-anchorzero,

this is not how Unleash works today, but a direction we want to move Unleash.

Currently you need to use this endpoint to fetched archived falgs:
https://docs.getunleash.io/reference/api/unleash/get-archived-features-by-project-id

Soon we want consolidate this in to the project features endpoint, this is why the archive-endpoint is marked as deprecated and why you can see hints on archive details for this endpoint.