fix: reject invalid storage cache capacities configs

[hzxa21]

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What's changed and what's your intention?

• Remove the max meta cache capacity constrain (4GB) by default.
• Add a check to ensure only if block_cache_capacity_mb, meta_cache_capacity_mb, shared_buffer_capacity_mb are all overwritten via config and their sum <= non_reserved_memory_bytes * storage_memory_portation (default = 0.3), will these configs be used.
• Add a check to prevent CN from starting up if resvered_memory_bytes >= total_memory_bytes

Checklist

• I have written necessary rustdoc comments
• I have added necessary unit tests and integration tests
• I have added test labels as necessary. See details.
• I have added fuzzing tests or opened an issue to track them. (Optional, recommended for new SQL features Sqlsmith: Sql feature generation #7934).
• My PR contains breaking changes. (If it deprecates some features, please create a tracking issue to remove them in the future).
• All checks passed in ./risedev check (or alias, ./risedev c)
• My PR changes performance-critical code. (Please run macro/micro-benchmarks and show the results.)

• My PR contains critical fixes that are necessary to be merged into the latest release. (Please check out the details)

Documentation

• My PR needs documentation updates. (Please use the Release note section below to summarize the impact on users)

Release note

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[fuyufjh]

LGTM

[fuyufjh]

Noticed an unrelated thing: the rustdoc of the fields in CacheConfig and CacheEvictionConfig are missing. These comments are used to generate a human-readable document via ./risedev generate-example-config. Please complete these rustdoc @MrCroxx.

[hzxa21]

I made the following changes in this PR:

• Add #[config_doc(nested)] for storage.cache, storage.data_file_cache, storage.meta_file_cache, storage.cache_refill so that the relevant CacheConfig, FileCacheConfig and CacheRefillConfig show up in docs.md.
• Add #[config_doc(omitted)] for storage.cache.block_cache_eviction and storage.cach.meta_cache_eviction because I think this is mostly used by us to test the eviction algorithm. @MrCroxx Do you think we need to expose CacheEvictionConfig in docs?
• Add docs for CacheConfig.

@MrCroxx Can you help to add docs for FileCacheConfig and CacheRefillConfig?

[MrCroxx]

Sure. Is it okay that I open another PR than merge to this one, or open another PR separately?

[MrCroxx]

A separate PR would be better, I think.

[MrCroxx]

Sure. Is it okay that I open another PR than merge to this one, or open another PR separately?

[Li0k]

Rest LGTM