[OPDATA-4855] Added TokenAccount Support for solana-functions

[chray-zhang]

Closes OPDATA-4855

Description

Originally the solana-functions buffer-layout endpoint only supported MintLayout and SanctumPoolStateLayout. It did not support Token account programs. This change is to add support to deserialize and support Token Accounts

Changes

Implemented: https://solana-labs.github.io/solana-program-library/token/js/variables/AccountLayout.html

Steps to Test

Token Account:

chrayzhang@MB-C3H04RT9WT ~ % curl -X POST http://localhost:8080 \
  -H "Content-Type: application/json" \
  -d '{
    "data": {
      "endpoint": "buffer-layout",
      "field": "amount",
      "stateAccountAddress": "FvkbfMm98jefJWrqkvXvsSZ9RFaRBae8k6c1jaYA5vY3"
    }
  }' | jq
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   497  100   336  100   161    271    130  0:00:01  0:00:01 --:--:--   401
{
  "data": {
    "result": "34228815152"
  },
  "statusCode": 200,
  "result": "34228815152",
  "timestamps": {
    "providerDataRequestedUnixMs": 1764628385812,
    "providerDataReceivedUnixMs": 1764628386096
  },
  "meta": {
    "adapterName": "SOLANA_FUNCTIONS",
    "metrics": {
      "feedId": "{\"stateAccountAddress\":\"fvkbfmm98jefjwrqkvxvssz9rfarbae8k6c1jaya5vy3\",\"field\":\"amount\"}"
    }
  }
}

Mint account:

chrayzhang@MB-C3H04RT9WT ~ % curl -X POST http://localhost:8080 \
  -H "Content-Type: application/json" \
  -d '{
    "data": {
      "endpoint": "buffer-layout",
      "field": "supply",
      "stateAccountAddress": "3b8X44fLF9ooXaUm3hhSgjpmVs6rZZ3pPoGnGahc3Uu7"
    }
  }' | jq
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   497  100   336  100   161   1635    783 --:--:-- --:--:-- --:--:--  2424
{
  "data": {
    "result": "34156329357"
  },
  "statusCode": 200,
  "result": "34156329357",
  "timestamps": {
    "providerDataRequestedUnixMs": 1764628429970,
    "providerDataReceivedUnixMs": 1764628430044
  },
  "meta": {
    "adapterName": "SOLANA_FUNCTIONS",
    "metrics": {
      "feedId": "{\"stateAccountAddress\":\"3b8x44flf9ooxaum3hhsgjpmvs6rzz3ppogngahc3uu7\",\"field\":\"supply\"}"
    }
  }
}

Quality Assurance

• [ x] 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.
• [ x] 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.
• [ x] If a new adapter was made, or a new endpoint was added, update the test-payload.json file with relevant requests.
• [ x] The branch naming follows git flow (feature/x, chore/x, release/x, hotfix/x, fix/x) or is created from Jira.
• [ x] This is related to a maximum of one Jira story or GitHub issue.
• [ x] Types are safe (avoid TypeScript/TSLint features like any and disable, instead use more specific types).
• [ x] 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.