Add more metrics for matching

[Shaddoll]

What changed?
Add more metrics for matching

Why?
Improve observability

How did you test it?

Potential risks

Release notes

Documentation Changes

[codecov]

Codecov Report

Attention: Patch coverage is 81.81818% with 2 lines in your changes missing coverage. Please review.

Project coverage is 72.93%. Comparing base (196d14b) to head (d606bec).
Report is 1 commits behind head on master.

Files	Patch %	Lines
service/matching/tasklist/matcher.go	66.66%	1 Missing ⚠️
service/matching/tasklist/task_list_manager.go	0.00%	1 Missing ⚠️

Additional details and impacted files

Files	Coverage Δ
service/matching/tasklist/forwarder.go	95.51% <100.00%> (+0.21%)	⬆️
service/matching/tasklist/matcher.go	78.80% <66.66%> (-1.00%)	⬇️
service/matching/tasklist/task_list_manager.go	66.91% <0.00%> (ø)

... and 8 files with indirect coverage changes

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