Improve --help formatting

[CodyCBakerPhD]

And some minor debugs

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 65.08%. Comparing base (a6ba38d) to head (aa4512a).
Report is 8 commits behind head on main.

Files	Patch %	Lines
src/dandi_s3_log_parser/_command_line_interface.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #42      +/-   ##
==========================================
- Coverage   68.08%   65.08%   -3.01%     
==========================================
  Files          11       12       +1     
  Lines         423      484      +61     
==========================================
+ Hits          288      315      +27     
- Misses        135      169      +34     

Flag	Coverage Δ
unittests	65.08% <0.00%> (-3.01%)	⬇️

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Files	Coverage Δ
src/dandi_s3_log_parser/__init__.py	100.00% <ø> (ø)
...c/dandi_s3_log_parser/_dandi_s3_log_file_parser.py	80.68% <ø> (-0.43%)	⬇️
src/dandi_s3_log_parser/testing/__init__.py	0.00% <ø> (ø)
src/dandi_s3_log_parser/_command_line_interface.py	0.00% <0.00%> (ø)

... and 1 file with indirect coverage changes