Add solana-balance endpoint to token-balance EA

[dskloetc]

https://smartcontract-it.atlassian.net/browse/OPDATA-3674

Description

We need to be able to get Solana balances for a PoR feed.

There is an existing solana endpoint. This can query balances of tokens on the Solana network.
But we need balances of the native Solana token on the same network so the new solana-balance endpoint queries just the native token.
This uses a different method on the the same SOLANA_RPC_URL endpoint.

Note: I copied some files for xrp in a separate commit to make it easier to see the difference between the two endpoints.

Changes

Add solana-balance endpoint which given a list of addresses returns the balance for each individual address.

Steps to Test

1. Unit/integration tests added.
2. Tested manually together with proof-of-reserves in another branch with a supporting change to proof-of-reserves.

curl --silent -S -X POST http://localhost:8080 -H 'Content-Type: application/json' -d '{
  "data": {
  "endpoint": "solana-balance",
  "addresses": [
    {
      "address": "7d73NFxuWQ2F248NA4XwxE95oFfbWZrc1sg4wcDJjzTq"
    }
  ]
}
}'
{
  "data": {
    "result": [
      {
        "address": "7d73NFxuWQ2F248NA4XwxE95oFfbWZrc1sg4wcDJjzTq",
        "balance": "8630400"
      }
    ],
    "decimals": 9
  },
  "statusCode": 200,
  "result": null,
  "timestamps": {
    "providerDataRequestedUnixMs": 1757956600397,
    "providerDataReceivedUnixMs": 1757956602611
  },
  "meta": {
    "adapterName": "TOKEN_BALANCE",
    "metrics": {
      "feedId": "{\"addresses\":[{\"address\":\"7d73nfxuwq2f248na4xwxe95offbwzrc1sg4wcdjjztq\"}]}"
    }
  }
}

Quality Assurance

• If a new adapter was made, or an existing one was modified so that its environment variables have changed, update the relevant infra-k8s configuration file.
• If a new adapter was made, or an existing one was modified so that its environment variables have changed, update the relevant adapter-secrets configuration file or update the soak testing blacklist.
• If a new adapter was made, or a new endpoint was added, update the test-payload.json file with relevant requests.
• The branch naming follows git flow (feature/x, chore/x, release/x, hotfix/x, fix/x) or is created from Jira.
• This is related to a maximum of one Jira story or GitHub issue.
• Types are safe (avoid TypeScript/TSLint features like any and disable, instead use more specific types).
• All code changes have 100% unit and integration test coverage. If testing is not applicable or too difficult to justify doing, the reasoning should be documented explicitly in the PR.

[changeset-bot]

🦋 Changeset detected

Latest commit: 56a0366

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

Name	Type
@chainlink/token-balance-adapter	Minor
@chainlink/proof-of-reserves-adapter	Patch
@chainlink/renvm-address-set-adapter	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR