Animal - Update territory size scaling

[TaranRallings]

Description

This replaces the toy method for territory size scaling with a proper allometric function.

Updates

• rework of territory_size scaling function including unit alignment
• reworked animal_cohort attributes relating to territory size
• new test

Fixes # (issue)

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

[jacobcook1995]

This is a pretty straightforward improvement

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.94%. Comparing base (165d494) to head (1f2fe60).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1424      +/-   ##
===========================================
+ Coverage    94.83%   94.94%   +0.11%     
===========================================
  Files           71       71              
  Lines         7452     7460       +8     
===========================================
+ Hits          7067     7083      +16     
+ Misses         385      377       -8     

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