[HUDI-3881] Implement index syntax for spark sql

[XuQianJin-Stars]

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What is the purpose of the pull request

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Brief change log

link: HUDI-3881

1. Create Index

CREATE INDEX [IF NOT EXISTS] index_name
ON [TABLE] [db_name.]table_name (column_name [ASC|DESC], ...) 
USING [bloom/lucene]
[PROPERTIES ('key'='value')] 

2. Refresh Index

REFRESH INDEX index_name ON [TABLE] [db_name.]table_name

3. Drop Index

DROP INDEX [IF EXISTS] index_name ON [TABLE] [db_name.]table_name

4. Show index

SHOW INDEX [index_name] ON [TABLE] [db_name.]table_name

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This pull request is a trivial rework / code cleanup without any test coverage.

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This pull request is already covered by existing tests, such as (please describe tests).

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This change added tests and can be verified as follows:

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• Added integration tests for end-to-end.
• Added HoodieClientWriteTest to verify the change.
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Committer checklist

• Has a corresponding JIRA in PR title & commit

• Commit message is descriptive of the change

• CI is green

• Necessary doc changes done or have another open PR

• For large changes, please consider breaking it into sub-tasks under an umbrella JIRA.

[hudi-bot]

CI report:

• 22f107f Azure: FAILURE Azure: SUCCESS

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