Add subcanopy nutrient uptakes into the soil model

[jacobcook1995]

Description

This PR changes the soil model so that supcanopy nutrient uptake actually removes nutrients from the appropriate pools

Fixes #1058

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 94.60%. Comparing base (4dd1336) to head (88ee1cb).
⚠️ Report is 1126 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1071   +/-   ##
========================================
  Coverage    94.60%   94.60%           
========================================
  Files           79       79           
  Lines         6937     6937           
========================================
  Hits          6563     6563           
  Misses         374      374           

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[davidorme]

LGTM