Add new Flint SQL grammar

[dai-chen]

Description

Added latest Flint SQL grammar changes as below.

Issues Resolved

1. ALTER statement: Add grammar files for alter index opensearch-spark#279
2. BLOOM_FILTER skip type: Add BloomFilter skipping index SQL support opensearch-spark#283

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

All modified and coverable lines are covered by tests ✅

Project coverage is 95.47%. Comparing base (a84c3ef) to head (7b165de).

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #2558   +/-   ##
=========================================
  Coverage     95.47%   95.47%           
  Complexity     5046     5046           
=========================================
  Files           486      486           
  Lines         14087    14087           
  Branches        943      943           
=========================================
  Hits          13450    13450           
  Misses          614      614           
  Partials         23       23           

Flag	Coverage Δ
sql-engine	95.47% <ø> (ø)

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[dai-chen]

Confirmed with @vamsi-amazon that #2554 will cover all latest Flint SQL grammar changes, including:

1. ALTER statement: Add grammar files for alter index opensearch-spark#279
2. BLOOM_FILTER skip type: Add BloomFilter skipping index SQL support opensearch-spark#283
3. ANALYZE statement: Implement analyze skipping index statement opensearch-spark#284

Closing this PR as not needed any more.