Update About API

[Eshan]

Update About API response

Sample Response

{
    "version": "v0.9.0",
    "uiVersion": "development",
    "commit": "e67e440",
    "deploymentId": "01HRYYAF36P2Q3YT3ZNPN6HGQC",
    "updateAvailable": false,
    "latestVersion": "v0.9.0",
    "llmActive": false,
    "llmProvider": null,
    "oidcActive": false,
    "license": "AGPL-3.0-only",
    "mode": "ingest / query",
    "staging": "<blank for query, path for ingester>",
    "cache": "Disabled",
    "grpcPort": 8001,
    "store": {
        "type": "S3 / local drive",
        "path": "http://localhost:9000/bucketname for distributed, data dir path for standalone server"
    }
}

[Nitish Tiwari]

Fixed in #705