feat: add Starrocks support

[geoHeil]

Summary

Add support for starrocks as a backend of metaxy in a) mysql compatibility and b) optimized native mode

resolve: #277

Changelog

Add support for starrocks as a backend of metaxy in a) mysql compatibility and b) optimized native mode

Test Plan

standard CI suite

relations

blocked by

• [Tool] Add Nix flake development environment StarRocks/starrocks#74009
  related
• [Enhancement] Add xxhash SQL functions StarRocks/starrocks#74445
• feat(starrocks): add backend ibis-project/ibis#12017
• feat: add xxh3_64 hash support #1220

[geoHeil]

• feat: add Starrocks support #1219 👈 (View in Graphite)
• main

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[codecov]

Codecov Report

❌ Patch coverage is 80.19802% with 100 lines in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
src/metaxy/ext/starrocks/metadata_store.py	77.45%	60 Missing and 25 partials ⚠️
src/metaxy/ext/starrocks/versioning.py	86.72%	12 Missing and 3 partials ⚠️

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