feat: refine rate limiter

[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\

• use flush rate or reclaim rate to limit admission or reinsertion
• remove reclaim rate limiter
• remove rated random rate limit policy

Checklist

• I have written necessary rustdoc comments
• I have added necessary unit tests and integration tests
• I have passed make check and make test or make all in my local envirorment.

Related issues or PRs (optional)

close #200

[codecov]

Codecov Report

Attention: 36 lines in your changes are missing coverage. Please review.

Comparison is base (ca747d9) 77.77% compared to head (1b4ed56) 77.40%.

❗ Current head 1b4ed56 differs from pull request most recent head 0a7672b. Consider uploading reports for the commit 0a7672b to get more accurate results

Files	Patch %	Lines
foyer-storage/src/admission/rated_ticket.rs	0.00%	18 Missing ⚠️
foyer-storage/src/reinsertion/rated_ticket.rs	0.00%	18 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #221      +/-   ##
==========================================
- Coverage   77.77%   77.40%   -0.37%     
==========================================
  Files          50       47       -3     
  Lines        5799     5661     -138     
==========================================
- Hits         4510     4382     -128     
+ Misses       1289     1279      -10     

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