feat(core): add more performance metrics

[EYHN]

[EYHN]

• #11799 👈 (View in Graphite)
• canary

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[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 55.71%. Comparing base (203e931) to head (5b73df0). Report is 8 commits behind head on canary.

Files with missing lines	Patch %	Lines
...ommon/nbstore/src/impls/idb/indexer/data-struct.ts	0.00%	2 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           canary   #11799      +/-   ##
==========================================
- Coverage   55.74%   55.71%   -0.04%     
==========================================
  Files        2525     2525              
  Lines      113457   113467      +10     
  Branches    18387    18389       +2     
==========================================
- Hits        63249    63216      -33     
- Misses      48412    48463      +51     
+ Partials     1796     1788       -8     

Flag	Coverage Δ
server-test	79.15% <ø> (ø)
unittest	31.02% <0.00%> (-0.06%)	:arrow_down:

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