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[bot]]

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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 :warning:

Additional details and impacted files

```diff @@ 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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