WIP: telemetry: add metrics

[liuzengh]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.67868%. Comparing base (cf0896e) to head (64ae39f).

Additional details and impacted files

@@                 Coverage Diff                 @@
##                main        #519         +/-   ##
===================================================
- Coverage   70.68538%   70.67868%   -0.00670%     
===================================================
  Files            195         195                 
  Lines          29852       29852                 
===================================================
- Hits           21101       21099          -2     
- Misses          7455        7456          +1     
- Partials        1296        1297          +1     

Flag	Coverage Δ
unittests	70.67868% <ø> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.