feat: Implement dedup for the new memtable and expose the config

[evenyag]

I hereby agree to the terms of the GreptimeDB CLA

What's changed and what's your intention?

This PR implements dedup for the new memtable. It adds a config to the MitoConfig to enable the new table.

This PR contains some bug fixes while testing the new memtable.

• It fixes an issue that the PartitionReader doesn't prune the first entry its underlying source returns.
• It also fixes that the KeyValue returns incorrect field num.

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)

• Tracking issue for the memtable improvement #2804

[fengjiachun]

LGTM

[codecov]

Codecov Report

Attention: Patch coverage is 93.47826% with 9 lines in your changes are missing coverage. Please review.

Project coverage is 85.26%. Comparing base (606309f) to head (39bc725).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3377      +/-   ##
==========================================
- Coverage   85.65%   85.26%   -0.40%     
==========================================
  Files         893      893              
  Lines      147210   147247      +37     
==========================================
- Hits       126099   125543     -556     
- Misses      21111    21704     +593     

[v0y4g3r]

LGTM