Feature/matric potential

[vgro]

This PR adds a function that converts soil moisture into matric potential. It is very oversimplified and not parameterized properly at the moment but hopefully enough to be used by the soil model.

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

[codecov-commenter]

Codecov Report

Merging #320 (889ba92) into develop (78b18b5) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop     #320      +/-   ##
===========================================
+ Coverage    96.50%   96.52%   +0.01%     
===========================================
  Files           48       48              
  Lines         2376     2388      +12     
===========================================
+ Hits          2293     2305      +12     
  Misses          83       83              

Files	Coverage Δ
...irtual_rainforest/models/hydrology/below_ground.py	100.00% <100.00%> (ø)
virtual_rainforest/models/hydrology/constants.py	100.00% <100.00%> (ø)
...ual_rainforest/models/hydrology/hydrology_model.py	100.00% <100.00%> (ø)

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[jacobcook1995]

LGTM!