chore: add TA metrics to grafana

[joseph-sentry]

we want to be able to measure the impact of the timescale changes so im adding relevant metrics

[seer-by-sentry]

✅ Sentry found no issues in your recent changes ✅

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.71%. Comparing base (6e3bd8b) to head (51e4ba1).
Report is 3 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1188   +/-   ##
=======================================
  Coverage   97.71%   97.71%           
=======================================
  Files         455      456    +1     
  Lines       37203    37224   +21     
=======================================
+ Hits        36353    36374   +21     
  Misses        850      850           

Flag	Coverage Δ
integration	42.78% <62.85%> (+0.01%)	⬆️
unit	90.54% <82.85%> (+<0.01%)	⬆️

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[codecov-notifications]

Codecov Report

All modified and coverable lines are covered by tests ✅

✅ All tests successful. No failed tests found.

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