Simplify gitignores by including whole dir and add caches

[elupus]

Proposed change

Simplify gitignores by including whole dir and add caches

Additional information

Checklist

• The changes are tested and work correctly
• pre-commit checks pass / the code has been formatted using Black
• Tests have been added to verify that the new code works

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (a6d414d) 85.28% compared to head (7385a80) 87.56%.
Report is 119 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #2915      +/-   ##
==========================================
+ Coverage   85.28%   87.56%   +2.28%     
==========================================
  Files         270      293      +23     
  Lines        8486     8997     +511     
==========================================
+ Hits         7237     7878     +641     
+ Misses       1249     1119     -130     

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[dmulcahey]

Thx