feat: unify foyer in-memory cache and disk cache

[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

All-in-one builder example (with all args):

let hybrid: HybridCache<u64, Arc<String>> = HybridCacheBuilder::new()
        .memory(1024)
        .with_shards(4)
        .with_eviction_config(LruConfig {
            high_priority_pool_ratio: 0.1,
        })
        .with_object_pool_capacity(1024)
        .with_hash_builder(ahash::RandomState::default())
        .with_weighter(|_key, value: &Arc<String>| value.len())
        .storage()
        .with_name("foyer")
        .with_eviction_config(LfuConfig {
            window_capacity_ratio: 0.1,
            protected_capacity_ratio: 0.8,
            cmsketch_eps: 0.001,
            cmsketch_confidence: 0.9,
        })
        .with_device_config(
            FsDeviceConfigBuilder::new(dir.path())
                .with_capacity(64 * 1024 * 1024)
                .with_file_size(4 * 1024 * 1024)
                .with_align(4 * 1024)
                .with_io_size(16 * 1024)
                .build(),
        )
        .with_catalog_shards(4)
        .with_admission_policy(Arc::new(RatedTicketAdmissionPolicy::new(10 * 1024 * 1024)))
        .with_reinsertion_policy(Arc::new(RatedTicketReinsertionPolicy::new(10 * 1024 * 1024)))
        .with_flushers(2)
        .with_reclaimers(2)
        .with_clean_region_threshold(2)
        .with_recover_concurrency(4)
        .with_compression(foyer::Compression::Lz4)
        .with_runtime_config(
            RuntimeConfigBuilder::new()
                .with_thread_name("foyer")
                .with_worker_threads(4)
                .build(),
        )
        .with_lazy(true)
        .build()
        .await?;

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)

#327

[codecov]

Codecov Report

Attention: Patch coverage is 81.07143% with 53 lines in your changes are missing coverage. Please review.

Project coverage is 80.65%. Comparing base (23bff43) to head (204d82d).

Files	Patch %	Lines
foyer/src/hybrid.rs	79.43%	51 Missing ⚠️
foyer-storage/src/reinsertion/exist.rs	0.00%	1 Missing ⚠️
foyer-storage/src/store.rs	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #391      +/-   ##
==========================================
+ Coverage   77.76%   80.65%   +2.88%     
==========================================
  Files          51       52       +1     
  Lines        6423     6668     +245     
==========================================
+ Hits         4995     5378     +383     
+ Misses       1428     1290     -138     

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