Add linting to CI and pre commit

[joelwilliam2005]

Fixes issue #95

[joelwilliam2005]

I also ran pre-commit once locally to lint all templates, css, json, yaml and pushed the changes. This should ensure consistency across the codebase.

[joelwilliam2005]

Changed the name from lint_python to lint_precommit.

[joelwilliam2005]

This argument is the only change in the workflow except the renaming.

[joelwilliam2005]

Didn't add JS linting as it is already included in the workflow.
Just mentioning the changed files, because there are so many changes.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.78%. Comparing base (8e3f825) to head (1e0feb5).
Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #96   +/-   ##
=======================================
  Coverage   93.78%   93.78%           
=======================================
  Files          43       43           
  Lines        1690     1690           
  Branches      111      111           
=======================================
  Hits         1585     1585           
  Misses         69       69           
  Partials       36       36           

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[Stormheg]

Thank you @joelwilliam2005, I've rebased your PR and updated the hooks to their latest version and pinned prettier in package.json