General refactor/restructure of project

[klaasnicolaas]

General restructure/refactor of the project.

• Updates all sub-dependencies
• Replace flake + all plugins + isort + pyupgrade + bandit by ruff
• Address all issues raised by ruff
• Simplify GitHub actions runs, to have a little fewer jobs/faster runtimes and leverage caching capabilities of other actions
• Remove old configs no longer in use
• Split test_output in seperate example files

[codecov]

Codecov Report

Base: 100.00% // Head: 100.00% // No change to project coverage 👍

Coverage data is based on head (9edec71) compared to base (96a3c9f).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #312   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            4         4           
  Lines           80        82    +2     
  Branches         6         6           
=========================================
+ Hits            80        82    +2     

Impacted Files	Coverage Δ
gridnet/models.py	100.00% <ø> (ø)
gridnet/gridnet.py	100.00% <100.00%> (ø)

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.