[store] refactor: impl RaftLog with SledVarTypeTree. Nothing really changed.

[drmingdrmer]

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Summary

[store] refactor: impl RaftLog with SledVarTypeTree. Nothing really changed.

Changelog

• Improvement

Related Issues

• FuseStore v0.1  #271

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[codecov-commenter]

Codecov Report

Merging #1241 (5984d80) into master (543bf01) will decrease coverage by 0%.
The diff coverage is 92%.

@@           Coverage Diff           @@
##           master   #1241    +/-   ##
=======================================
- Coverage      72%     72%    -1%     
=======================================
  Files         464     464            
  Lines       27678   27465   -213     
=======================================
- Hits        20075   19864   -211     
+ Misses       7603    7601     -2     

Impacted Files	Coverage Δ
fusestore/store/src/meta_service/raft_log.rs	92% <91%> (-3%)	⬇️
fusestore/store/src/meta_service/raftmeta.rs	77% <100%> (-1%)	⬇️
fusestore/store/src/meta_service/sled_tree.rs	92% <0%> (-2%)	⬇️
...estore/store/src/meta_service/sled_vartype_tree.rs	93% <0%> (-2%)	⬇️
fusestore/store/src/configs/config.rs	97% <0%> (-1%)	⬇️

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[databend-bot]

CI Passed
Reviewer Approved
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