Add Flint Spark index management API

[dai-chen]

Description

1. Draft Flint doc: https://github.com/dai-chen/sql-1/blob/add-flint-spark-api/flint/docs/index.md (put everything in one doc for now)
2. Add high level Flint Spark API FlintSpark and FlintSparkSkippingIndex
3. Add a basic Partition index PartitionSkippingStrategy and FlintClient.deleteIndex() for integration test

TODO

Implement Partition index building once Flint batch writer is ready

API Example

val flint = new FlintSpark(spark)

flint.skippingIndex()
    .onTable("alb_logs")
    .filterBy("time > 2023-04-01 00:00:00")
    .addPartitionIndex("year", "month", "day")
    .addValueListIndex("elb_status_code")
    .addBloomFilterIndex("client_ip")
    .create()

Please find more details in Flint doc, IT and detailed design in opensearch-project/opensearch-spark#2.

Issues Resolved

opensearch-project/opensearch-spark#2

Check List

• New functionality includes testing.
  • All tests pass, including unit test, integration test and doctest
• New functionality has been documented.
  • New functionality has javadoc added
  • New functionality has user manual doc added
• Commits are signed per the DCO using --signoff

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[codecov]

Codecov Report

Merging #1636 (c8da035) into feature/flint (614d27a) will not change coverage.
The diff coverage is n/a.

❗ Current head c8da035 differs from pull request most recent head 039ef8e. Consider uploading reports for the commit 039ef8e to get more accurate results

@@               Coverage Diff                @@
##             feature/flint    opensearch-project/sql#1636   +/-   ##
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  Coverage            97.19%   97.19%           
  Complexity            4107     4107           
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  Files                  371      371           
  Lines                10464    10464           
  Branches               706      706           
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  Hits                 10170    10170           
  Misses                 287      287           
  Partials                 7        7           

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sql-engine	97.19% <ø> (ø)

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[penghuo]

QQ, should we put all the flint spark related configuration in here?

[dai-chen]

yes, I think we should put all together here or a new FlintSparkConf class later.