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[bot]]

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 :warning:
service/matching/tasklist/task_list_manager.go	0.00%	1 Missing :warning:

Additional details and impacted files

| [Files](https://app.codecov.io/gh/uber/cadence/pull/6208?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uber) | Coverage Δ | | |---|---|---| | [service/matching/tasklist/forwarder.go](https://app.codecov.io/gh/uber/cadence/pull/6208?src=pr&el=tree&filepath=service%2Fmatching%2Ftasklist%2Fforwarder.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uber#diff-c2VydmljZS9tYXRjaGluZy90YXNrbGlzdC9mb3J3YXJkZXIuZ28=) | `95.51% <100.00%> (+0.21%)` | :arrow_up: | | [service/matching/tasklist/matcher.go](https://app.codecov.io/gh/uber/cadence/pull/6208?src=pr&el=tree&filepath=service%2Fmatching%2Ftasklist%2Fmatcher.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uber#diff-c2VydmljZS9tYXRjaGluZy90YXNrbGlzdC9tYXRjaGVyLmdv) | `78.80% <66.66%> (-1.00%)` | :arrow_down: | | [service/matching/tasklist/task\_list\_manager.go](https://app.codecov.io/gh/uber/cadence/pull/6208?src=pr&el=tree&filepath=service%2Fmatching%2Ftasklist%2Ftask_list_manager.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uber#diff-c2VydmljZS9tYXRjaGluZy90YXNrbGlzdC90YXNrX2xpc3RfbWFuYWdlci5nbw==) | `66.91% <0.00%> (ø)` | | ... and [8 files with indirect coverage changes](https://app.codecov.io/gh/uber/cadence/pull/6208/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uber) ------ [Continue to review full report in Codecov by Sentry](https://app.codecov.io/gh/uber/cadence/pull/6208?dropdown=coverage&src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uber). > **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uber) > `Δ = absolute (impact)`, `ø = not affected`, `? = missing data` > Powered by [Codecov](https://app.codecov.io/gh/uber/cadence/pull/6208?dropdown=coverage&src=pr&el=footer&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uber). Last update [196d14b...d606bec](https://app.codecov.io/gh/uber/cadence/pull/6208?dropdown=coverage&src=pr&el=lastupdated&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uber). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uber).