Add Ruff D rule

[MarcSkovMadsen]

Builds on #977. So review that one first.

The only thing I've touched is in pyproject.toml. The rest is auto fixed by Ruff when I run ruff check.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.

Project coverage is 87.33%. Comparing base (b52fde8) to head (ea395f8).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
param/serializer.py	0.00%	5 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #982   +/-   ##
=======================================
  Coverage   87.33%   87.33%           
=======================================
  Files           9        9           
  Lines        4928     4928           
=======================================
  Hits         4304     4304           
  Misses        624      624           

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[hoxbro]

Just changing base branch so it easier to review