feat(inverted_index): introduce SstIndexCreator

[zhongzc]

I hereby agree to the terms of the GreptimeDB CLA

What's changed and what's your intention?

Added SstIndexCreator, a crucial structure used by the mito engine for creating indexes, with methods:

• update: Receives a batch and updates the index based on the batch.
• finish: Completes index creation and writes the index file.
• abort: Cancels index creation.

Since external sorting is required during the index creation process, any interruption requires us to clean up the intermediate files generated by the external sorting, which is reflected in do_cleanup.

Additional structures that serve SstIndexCreator were added:

• TempFileProvider: Implements ExternalTempFileProvider, which is a dependency of external sorting.
• IntermediateLocation: Responsible for providing paths for intermediate files used in external sorting.
• Statistics: Responsible for recording statistical information during index creation and flushing it to metrics.
• IndexValuesCodec: Responsible for decoding primary keys from the batch to values.

Checklist

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.
• This PR does not require documentation updates.

Refer to a related PR or issue link (optional)

#2705

[codecov]

Codecov Report

Attention: 136 lines in your changes are missing coverage. Please review.

Comparison is base (6e860bc) 85.59% compared to head (8767b0d) 85.04%.
Report is 6 commits behind head on main.

Additional details and impacted files

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- Coverage   85.59%   85.04%   -0.55%     
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  Files         815      818       +3     
  Lines      133334   133862     +528     
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- Hits       114123   113847     -276     
- Misses      19211    20015     +804     

[killme2008]

LGTM

[waynexia]

LGTM