*: add QueryRegion related metrics

[JmPotato]

Signed-off-by: JmPotato ghzpotato@gmail.com

What problem does this PR solve?

Issue Number: ref #8690.

What is changed and how does it work?

Add QueryRegion related metrics.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)

Release note

None.

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[ti-chi-bot]

@JmPotato: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-integration-realcluster-test	d3f326b	link	true	/test pull-integration-realcluster-test

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[codecov]

Codecov Report

Attention: Patch coverage is 96.42857% with 3 lines in your changes missing coverage. Please review.

Project coverage is 76.24%. Comparing base (b7977dd) to head (d3f326b).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #9076      +/-   ##
==========================================
+ Coverage   76.20%   76.24%   +0.04%     
==========================================
  Files         468      468              
  Lines       71471    71549      +78     
==========================================
+ Hits        54462    54556      +94     
+ Misses      13595    13587       -8     
+ Partials     3414     3406       -8     

Flag	Coverage Δ
unittests	76.24% <96.42%> (+0.04%)	⬆️

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