WIP: Add bbox utilities to the commandline

[pjbull]

No description provided.

[github-actions]

🚀 Deployed on https://deploy-preview-377--silly-keller-664934.netlify.app

[codecov]

Codecov Report

Attention: Patch coverage is 41.17647% with 20 lines in your changes missing coverage. Please review.

Project coverage is 82.4%. Comparing base (d4fe633) to head (a8bdc97).

Files with missing lines	Patch %	Lines
zamba/utils_cli.py	38.0%	13 Missing ⚠️
zamba/images/bbox.py	14.2%	6 Missing ⚠️
zamba/images/data.py	83.3%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           master    #377     +/-   ##
========================================
- Coverage    82.8%   82.4%   -0.5%     
========================================
  Files          37      37             
  Lines        3191    3220     +29     
========================================
+ Hits         2645    2656     +11     
- Misses        546     564     +18     

Files with missing lines	Coverage Δ
zamba/images/data.py	85.2% <83.3%> (-0.5%)	⬇️
zamba/images/bbox.py	73.2% <14.2%> (-3.6%)	⬇️
zamba/utils_cli.py	44.2% <38.0%> (-4.2%)	⬇️

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