enhance: Decouple compaction from shard

[bigsheeper]

Decouple compaction from shard, remove dependencies on shards (e.g. SyncSegments, injection).

issue: #32809

[codecov]

Codecov Report

Attention: Patch coverage is 90.59829% with 11 lines in your changes are missing coverage. Please review.

Project coverage is 82.13%. Comparing base (32d3e22) to head (fb60f42).
Report is 12 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #33138      +/-   ##
==========================================
+ Coverage   82.07%   82.13%   +0.06%     
==========================================
  Files        1003     1003              
  Lines      128993   128929      -64     
==========================================
+ Hits       105869   105901      +32     
+ Misses      19138    19058      -80     
+ Partials     3986     3970      -16     

Files	Coverage Δ
internal/datacoord/compaction.go	89.85% <100.00%> (+2.14%)	⬆️
internal/datacoord/compaction_scheduler.go	96.99% <100.00%> (-3.01%)	⬇️
internal/datacoord/server.go	70.92% <100.00%> (-0.46%)	⬇️
internal/datanode/compaction/mix_compactor.go	82.58% <100.00%> (+2.95%)	⬆️
internal/datanode/syncmgr/sync_manager.go	92.40% <ø> (-0.37%)	⬇️
internal/datanode/compaction_executor.go	93.26% <83.33%> (-0.13%)	⬇️
internal/datacoord/compaction_trigger.go	87.06% <60.00%> (+2.91%)	⬆️
internal/datanode/l0_compactor.go	90.15% <83.33%> (+11.02%)	⬆️
internal/datacoord/compaction_trigger_v2.go	90.24% <82.35%> (-1.54%)	⬇️
internal/datanode/services.go	88.62% <25.00%> (+3.37%)	⬆️

... and 32 files with indirect coverage changes

[XuanYang-cn]

/lgtm

[czs007]

/approve
/lgtm

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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