967 reactivate aerodynamic resistance calculation

[vgro]

This PR reactivates the functions for aerodynamic_resistance and friction_velocity. These used to be constants because there was a bug that was hard to identify with other pieces still largely missing. Now resolved. I also moved the function to wind.py from energy_balance.py and updated the docs.

Fixes #967

Type of change

• New feature (non-breaking change which adds functionality)
• Optimization (back-end change that speeds up the code)
• Bug fix (non-breaking change which fixes an issue)

Key checklist

• Make sure you've run the pre-commit checks: $ pre-commit run -a
• All tests pass: $ poetry run pytest

Further checks

• Code is commented, particularly in hard-to-understand areas
• Tests added that prove fix is effective or that feature works
• Relevant documentation reviewed and updated

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.21%. Comparing base (7dc92cf) to head (99ff36f).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #970      +/-   ##
===========================================
- Coverage    94.22%   94.21%   -0.02%     
===========================================
  Files           79       79              
  Lines         6563     6564       +1     
===========================================
  Hits          6184     6184              
- Misses         379      380       +1     

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[jacobcook1995]

LGTM! (just a couple of minor queries)