feat: introduce estimated size filter

[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 IS

For OpenDAL use case. FYI: apache/opendal#6366

Checklist

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

Related issues or PRs (optional)

apache/opendal#6366

[codecov]

Codecov Report

❌ Patch coverage is 82.60870% with 4 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
foyer-storage/src/filter.rs	82.60%	4 Missing ⚠️

Files with missing lines	Coverage Δ
foyer-storage/src/filter.rs	83.05% <82.60%> (-0.29%)	⬇️

... and 3 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.