Output folder option

[BryonLewis]

resolves #4

• Adds an output folder option to pipeline
• removes the unnecessary printing of the scoring (scoring isn't enabled yet)
• Creates the directory if the folder doesn't exist for output
• Still defaults the current directory if nothing is provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.3%. Comparing base (ee1c09b) to head (b93f23e).
⚠️ Report is 7 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##            main      #7     +/-   ##
=======================================
+ Coverage   71.1%   71.3%   +0.1%     
=======================================
  Files          6       6             
  Lines        964     969      +5     
=======================================
+ Hits         686     691      +5     
  Misses       278     278             

Files with missing lines	Coverage Δ
batbot/__init__.py	75.7% <100.0%> (+0.7%)	⬆️
batbot/spectrogram/__init__.py	70.3% <100.0%> (+<0.1%)	⬆️
tests/test_spectrogram.py	100.0% <100.0%> (ø)

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[bluemellophone]

LGTM