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

[Tangruilin]

Search before asking

• I had searched in the issues and found no similar issues.

Motivation

Track

• Tracking Issues: Support count-min sketch data structure and commands #3522

Proposal

• Proposal: Kvrocks Count-Min Sketch #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?

• I'm willing to submit a PR!