feat(cms): Add storage encoding and Count-Min Sketch type implementation

### Search before asking

- [x] I had searched in the [issues](https://github.com/apache/kvrocks/issues) and found no similar issues.

### Motivation

## Track
- [ ] #3522

## Proposal
- #3404

### Solution

- Add CMS metadata encoding and decoding support.
- Add the Count-Min Sketch storage layout.
- Add core implementations for init, incrby, query and info.
- Add basic C++ unit tests for init, incrby, query and info.

### Are you willing to submit a PR?

- [x] I'm willing to submit a PR!

The payload names no files; begin by locating the existing CMS command and storage code in the C++ tree. Trace the init, incrby, query, and info entry points, then add metadata encoding and decoding coverage plus basic C++ unit tests for those operations; done means the requested storage layout and four core operations are covered.

Written by the indexing model from the issue text.