[ISSUE #8764] Implement consume lag estimation in cq rocksdb store

[LetLetMe]

Which Issue(s) This PR Fixes

Fixes #8764

Brief Description

How Did You Test This Change?

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 73.91304% with 6 lines in your changes missing coverage. Please review.

Project coverage is 47.69%. Comparing base (daf3d1a) to head (ce7dda6).
Report is 15 commits behind head on develop.

Files with missing lines	Patch %	Lines
...ache/rocketmq/store/queue/RocksDBConsumeQueue.java	73.91%	3 Missing and 3 partials ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #8800      +/-   ##
=============================================
+ Coverage      47.52%   47.69%   +0.17%     
- Complexity     11592    11828     +236     
=============================================
  Files           1282     1283       +1     
  Lines          89848    90709     +861     
  Branches       11557    11737     +180     
=============================================
+ Hits           42697    43261     +564     
- Misses         41927    42175     +248     
- Partials        5224     5273      +49     

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[lizhimins]

还需要评估下不同使用场景下的影响，例如队列数量极多时