feat: impl lsm-tree basic write and read path

[MrCroxx]

Add S3LsmTree and implement basic write and read path.

todo:

• Remove unused print.
• Add unit tests.
• Add concurrent tests.

Ref: #44 .

[codecov-commenter]

Codecov Report

Merging #51 (b49b220) into main (5c1c608) will decrease coverage by 0.21%.
The diff coverage is 82.44%.

@@            Coverage Diff             @@
##             main      #51      +/-   ##
==========================================
- Coverage   91.93%   91.72%   -0.22%     
==========================================
  Files          28       29       +1     
  Lines        2839     2948     +109     
==========================================
+ Hits         2610     2704      +94     
- Misses        229      244      +15     

Impacted Files	Coverage Δ
rudder/src/meta.rs	10.34% <0.00%> (ø)
storage/src/lsm_tree/manifest/version.rs	94.84% <66.66%> (-0.02%)	⬇️
storage/src/lsm_tree/utils/skiplist/list.rs	78.74% <77.77%> (+0.65%)	⬆️
storage/src/lsm_tree/s3_lsm_tree.rs	82.52% <82.52%> (ø)
storage/src/lsm_tree/components/block_cache.rs	75.00% <100.00%> (+2.77%)	⬆️
storage/src/lsm_tree/components/memtable.rs	100.00% <100.00%> (ø)
storage/src/lsm_tree/components/sstable_store.rs	87.50% <100.00%> (ø)
storage/src/lsm_tree/iterator/memtable_iterator.rs	100.00% <100.00%> (ø)
storage/src/lsm_tree/utils/skiplist/arena.rs	100.00% <0.00%> (+7.14%)	⬆️

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[MrCroxx]

May be add a S3LsmTreeCore and attach RwLock directly on it will be better.