HDDS-8697 Recon - Expose API for total count for blocks pending for deletion.

[ArafatKhan2198]

What changes were proposed in this pull request?

Improvements have been made to the existing BlocksEndpoint API response. Now, the total count of blocks pending deletion is displayed in the API response. The updated response will appear as follows:

{
  "totalCount": 1000,
  "containerStateBlockInfoListMap": {
    "OPEN": [
      {
        "containerId": 100,
        "localIDList": [
          1,
          2,
          3,
          4
        ],
        "localIDCount": 4,
        "txID": 1
      }
    ]
  }
}

This new response includes the total count of pending deletions blocks and a list of containers, each with their state, container ID, list of local IDs, count of local IDs, and transaction ID.

What is the link to the Apache JIRA

https://issues.apache.org/jira/browse/HDDS-8697

How was this patch tested?

Added new and made modifications to the existing UT's

[ArafatKhan2198]

@devmadhuu @adoroszlai @symious Can you please take a look !!

[devmadhuu]

@ArafatKhan2198 thanks for working on this patch, We need total count and unreplicated and replicated size mapped to those blocks. You should provide a new API, below API is only based on pagination.

[devmadhuu]

Pls don't change in existing API. This API should work based on pagination params only.

[devmadhuu]

This doesn't give correct count. We should not use this method.

[adoroszlai]

/pending

[github-actions]

Marking this issue as un-mergeable as requested.

Please use /ready comment when it's resolved.

Please note that the PR will be closed after 21 days of inactivity from now. (But can be re-opened anytime later...)

/pending

[github-actions]

Thank you very much for the patch. I am closing this PR temporarily as there was no activity recently and it is waiting for response from its author.

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