feat(meta): define model V2 for hummock metadata

[zwang28]

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What's changed and what's your intention?

This PR defines sql backend model for hummock like #12454.
In addition, as HummockVersion is no longer stored in meta store, obsolete code is also removed in this PR.

Controllers will be added in subsequent PR.

Checklist

• I have written necessary rustdoc comments
• I have added necessary unit tests and integration tests
• I have added fuzzing tests or opened an issue to track them. (Optional, recommended for new SQL features Sqlsmith: Sql feature generation #7934).
• My PR contains breaking changes. (If it deprecates some features, please create a tracking issue to remove them in the future).
• All checks passed in ./risedev check (or alias, ./risedev c)
• My PR changes performance-critical code. (Please run macro/micro-benchmarks and show the results.)

• My PR contains critical fixes that are necessary to be merged into the latest release. (Please check out the details)

Documentation

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Release note

If this PR includes changes that directly affect users or other significant modifications relevant to the community, kindly draft a release note to provide a concise summary of these changes. Please prioritize highlighting the impact these changes will have on users.

[github-actions]

license-eye has totally checked 4248 files.

Valid	Invalid	Ignored	Fixed
1877	7	2364	0

Click to see the invalid file list

• src/meta/src/model_v2/compaction_config.rs
• src/meta/src/model_v2/compaction_status.rs
• src/meta/src/model_v2/compaction_task.rs
• src/meta/src/model_v2/hummock_pinned_snapshot.rs
• src/meta/src/model_v2/hummock_pinned_version.rs
• src/meta/src/model_v2/hummock_version_delta.rs
• src/meta/src/model_v2/hummock_version_stats.rs

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (main@848b0a1). Click here to learn what that means.
Report is 9 commits behind head on main.
The diff coverage is 88.29%.

@@           Coverage Diff           @@
##             main   #12674   +/-   ##
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  Lines           ?   241708           
  Branches        ?        0           
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  Hits            ?   167819           
  Misses          ?    73889           
  Partials        ?        0           

Flag	Coverage Δ
rust	69.43% <88.29%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
src/common/src/system_param/mod.rs	84.13% <ø> (ø)
...c/meta/src/backup_restore/meta_snapshot_builder.rs	87.84% <ø> (ø)
src/meta/src/backup_restore/restore.rs	85.68% <100.00%> (ø)
src/meta/src/model_v2/migration/src/lib.rs	100.00% <100.00%> (ø)
src/meta/src/model_v2/mod.rs	0.00% <ø> (ø)
src/meta/src/model_v2/compaction_config.rs	0.00% <0.00%> (ø)
src/meta/src/model_v2/compaction_status.rs	0.00% <0.00%> (ø)
src/meta/src/model_v2/compaction_task.rs	0.00% <0.00%> (ø)
src/meta/src/model_v2/hummock_pinned_snapshot.rs	0.00% <0.00%> (ø)
src/meta/src/model_v2/hummock_pinned_version.rs	0.00% <0.00%> (ø)
... and 4 more

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[zwang28]

May have to fall back to relation with exact 2 fields (key and value) in order to reuse BTreeMapTransaction to the most 😅 .

[zwang28]

May have to fall back to relation with exact 2 fields (key and value) in order to reuse BTreeMapTransaction to the most 😅 .

I was wrong. Actually BTreeMapTransaction can be reused effortlessly.

This PR is ready for review. @yezizp2012

[yezizp2012]

LGTM