Printing Coordinates and degrees as input

[teubert]

Simple PR, adds a string when printing a coordinate.

Shows up like this:

coordinate at 0.6474780571146516°N 1.3331926129490697°W and -0.5999193691200001m elevation

Also, update trajectory and coord to take deg. Updated docs, examples, and tests accordingly

[github-actions]

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[codecov-commenter]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (951cdfc) 83.30% compared to head (aee4ff3) 83.29%.

Files	Patch %	Lines
src/progpy/utils/traj_gen/geometry.py	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #140      +/-   ##
==========================================
- Coverage   83.30%   83.29%   -0.01%     
==========================================
  Files         100      100              
  Lines       10505    10507       +2     
==========================================
+ Hits         8751     8752       +1     
- Misses       1754     1755       +1     

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