fix: search acceptable paths for codecov yaml if not passed in

[matt-codecov]

fixes #365

the node uploader searched for a codecov yaml in one of 12 paths. this PR searches the same 12 paths when looking for the codecov yaml on startup

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (019a55a) 95.94% compared to head (4d6239f) 96.01%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #368      +/-   ##
==========================================
+ Coverage   95.94%   96.01%   +0.07%     
==========================================
  Files          81       81              
  Lines        2789     2813      +24     
==========================================
+ Hits         2676     2701      +25     
+ Misses        113      112       -1     

Flag	Coverage Δ
python3.10	96.30% <100.00%> (+0.06%)	⬆️
python3.11	96.30% <100.00%> (+0.06%)	⬆️
python3.8	96.27% <96.77%> (+0.03%)	⬆️
python3.9	96.27% <96.77%> (+0.03%)	⬆️
smart-labels	96.01% <100.00%> (+0.07%)	⬆️

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[giovanni-guidini]

LGTM

I don't really like all the empty codecov.ymls in the project though. I'd suggest using tempfile to create a fake project structure on-the-fly
(and use pytest.mark.parametrize)

But you know, small suggestion that should not prevent this from being merged.