Add vacuum index API and SQL support

[dai-chen]

Description

This is the first PR for #104. PRs related to this work are planned below:

• [Current PR] Add vacuumIndex API and SQL support: Added vacuumIndex() API and VACUUM SQL statement for skipping, covering and MV. It deletes both Flint index data and metadata log entry.
• [Pending] Change deleteIndex API and DROP index statement to logical delete
• [Pending] Change query rewriter to ignore logical deleted index

Documentation

• Flint core index state transition: https://github.com/dai-chen/opensearch-spark/blob/add-vacuum-index-statement/docs/index.md#index-state-transition
• Flint Spark index state transition: https://github.com/dai-chen/opensearch-spark/blob/add-vacuum-index-statement/docs/index.md#index-state-transition-1

Testing

# Mock logical delete since drop index PR coming later
PUT .query_execution_request_myglue/_doc/ZmxpbnRfbXlnbHVlX2RzX3RhYmxlc19odHRwX2xvZ3Nfc2tpcHBpbmdfaW5kZXg=
{
  "version": "1.0",
  "latestId": "ZmxpbnRfbXlnbHVlX2RzX3RhYmxlc19odHRwX2xvZ3Nfc2tpcHBpbmdfaW5kZXg=",
  "type": "flintindexstate",
  "state": "deleted",
  "applicationId": "unknown",
  "jobId": "unknown",
  "dataSourceName": "myglue",
  "jobStartTime": 0,
  "lastUpdateTime": 1702329935279,
  "error": ""
}

# Run vacuum statement
spark-sql> VACUUM SKIPPING INDEX ON ds_tables.http_logs;

# Both index data and metadata log entry deleted
GET flint_myglue_ds_tables_http_logs_skipping_index/_mapping
{
  "error": {
    ...
    "type": "index_not_found_exception",
    "reason": "no such index [flint_myglue_ds_tables_http_logs_skipping_index]",
    "index": "flint_myglue_ds_tables_http_logs_skipping_index",
    "resource.id": "flint_myglue_ds_tables_http_logs_skipping_index",
    "resource.type": "index_or_alias",
    "index_uuid": "_na_"
  },
  "status": 404
}
GET .query_execution_request_myglue/_doc/ZmxpbnRfbXlnbHVlX2RzX3RhYmxlc19odHRwX2xvZ3Nfc2tpcHBpbmdfaW5kZXg=
{
  "_index": ".query_execution_request_myglue",
  "_id": "ZmxpbnRfbXlnbHVlX2RzX3RhYmxlc19odHRwX2xvZ3Nfc2tpcHBpbmdfaW5kZXg=",
  "found": false
}

TODO

1. Will add SQL IT later due to dependency on logical delete change in next PR
2. [TBD] Figure out how to clean up checkpoint data

Issues Resolved

#104

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