feat: introduce tls in-memory cache to reduce lock compete

[MrCroxx]

What's changed and what's your intention?

Please explain IN DETAIL what the changes are in this PR and why they are needed. :D

As title.

rm -rf /6536/foyer && cargo build --release && RUST_BACKTRACE=1 RUST_LOG=info ./target/release/foyer-bench --dir /6536/foyer --mem 64 --disk 102400 --file-size 64 --get-range 10000 --flushers 4 --reclaimers 4 --time 60 --writers 256 --w-rate 4 --admission-rate-limit 500 --readers 1024 --r-rate 1 --runtime --compression none --distribution zipf --distribution-zipf-s 0.8 --metrics --eviction lru

vs

... --thread-local-cache-capacity 4

There is regression on baseline. I'll fix it later.

Checklist

• I have written the necessary rustdoc comments
• I have added the necessary unit tests and integration tests
• I have passed make all (or make fast instead if the old tests are not modified) in my local environment.

Related issues or PRs (optional)

#566

[codecov]

Codecov Report

Attention: Patch coverage is 49.23077% with 33 lines in your changes missing coverage. Please review.

Project coverage is 85.77%. Comparing base (c764af3) to head (d3dc2f4).

Files	Patch %	Lines
foyer-memory/src/local.rs	0.00%	29 Missing ⚠️
foyer-memory/src/generic.rs	76.92%	3 Missing ⚠️
foyer-bench/src/main.rs	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #580      +/-   ##
==========================================
- Coverage   86.09%   85.77%   -0.33%     
==========================================
  Files          59       60       +1     
  Lines        7589     7653      +64     
==========================================
+ Hits         6534     6564      +30     
- Misses       1055     1089      +34     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.