Update codecov and add flag for integration tests

[amontanez24]

resolves #354

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.36%. Comparing base (e0bf957) to head (f4099b8).
Report is 75 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #373       +/-   ##
===========================================
+ Coverage   50.73%   65.36%   +14.63%     
===========================================
  Files          19       20        +1     
  Lines        1222     1282       +60     
===========================================
+ Hits          620      838      +218     
+ Misses        602      444      -158     

Flag	Coverage Δ
integration	53.51% <ø> (?)
unit	52.49% <ø> (?)

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