feat: introduce manifest file for fast disk cache clear

[MrCroxx]

Signed-off-by: MrCroxx [email protected]## 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

Introduce manifest file for fast disk cache clear.

Changes:

• Introduce manifest file to disk cache for fast disk cache clear.
• Direct fs device can use default manifest file, direct file device must specify one.
• Remove small object disk cache meta region, use manifest file instead.

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)

[codecov]

Codecov Report

Attention: Patch coverage is 88.84298% with 27 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
foyer/src/hybrid/builder.rs	0.00%	9 Missing ⚠️
foyer-storage/src/store.rs	57.89%	8 Missing ⚠️
foyer-storage/src/manifest.rs	97.81%	3 Missing ⚠️
foyer-storage/src/large/batch.rs	77.77%	2 Missing ⚠️
foyer-storage/src/small/set_manager.rs	81.81%	2 Missing ⚠️
foyer-bench/src/main.rs	66.66%	1 Missing ⚠️
foyer-storage/src/large/generic.rs	96.42%	1 Missing ⚠️
foyer-storage/src/small/generic.rs	87.50%	1 Missing ⚠️

Files with missing lines	Coverage Δ
foyer-storage/src/device/direct_fs.rs	88.26% <100.00%> (+0.19%)	⬆️
foyer-storage/src/large/reclaimer.rs	86.25% <100.00%> (+0.77%)	⬆️
foyer-storage/src/large/recover.rs	89.60% <100.00%> (-0.70%)	⬇️
foyer-storage/src/region.rs	88.95% <ø> (-1.66%)	⬇️
foyer-storage/src/small/batch.rs	81.33% <100.00%> (ø)
foyer-bench/src/main.rs	65.05% <66.66%> (+<0.01%)	⬆️
foyer-storage/src/large/generic.rs	89.83% <96.42%> (+0.08%)	⬆️
foyer-storage/src/small/generic.rs	75.54% <87.50%> (+0.40%)	⬆️
foyer-storage/src/large/batch.rs	83.01% <77.77%> (-0.06%)	⬇️
foyer-storage/src/small/set_manager.rs	87.94% <81.81%> (-2.35%)	⬇️
... and 3 more