ci: Add linter

[mtrezza]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 48.21%. Comparing base (724cd31) to head (dd1f26c).
Report is 26 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #406      +/-   ##
==========================================
- Coverage   52.90%   48.21%   -4.70%     
==========================================
  Files         105      106       +1     
  Lines        4699     6204    +1505     
  Branches      830      952     +122     
==========================================
+ Hits         2486     2991     +505     
- Misses       2024     2908     +884     
- Partials      189      305     +116     

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