Add problem matchers

[mhucka]

GitHub Problem Matchers are a mechanism that enable workflow steps to scan the outputs of GitHub Actions for regex patterns and automatically write annotations in the workflow summary page. Using Problem Matchers allows information to be displayed more prominently in the GitHub user interface.

This add problem matchers for Pylint, Pytest, MyPy, and Black output. More problem matchers can be added in the future as more checks are added to the CI workflows.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.16%. Comparing base (34b9c81) to head (4fcb7e6).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7122   +/-   ##
=======================================
  Coverage   98.16%   98.16%           
=======================================
  Files        1093     1093           
  Lines       95420    95420           
=======================================
  Hits        93665    93665           
  Misses       1755     1755           

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