Feature/update module overview

[vgro]

This PR adds a description of the abiotic_simple_model to the module overview.

I don't remember what we agreed regarding module/ model, I thought is was model but it is a bit mixed in this file. I am happy to make the changes with your ok.

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

[codecov-commenter]

Codecov Report

Merging #224 (ba1dd7c) into develop (531c93d) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop     #224   +/-   ##
========================================
  Coverage    95.18%   95.18%           
========================================
  Files           35       35           
  Lines         1494     1494           
========================================
  Hits          1422     1422           
  Misses          72       72           

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

[jacobcook1995]

LGTM!

Unfortunately, I also can't remember what we agreed on in terms of module vs model when referring to our respective sections of code.

[davidorme]

LGTM too. I'd go with model, I think. We have a BaseModel and module is widely used in Python to talk about organisational units of code more widely.