DX: define developer environment with `uv` #552

Job	Run time
pytest / Determine job matrix	8s
style / Determine skipped pre-commit hooks	11s
doc / nb / Execute and build documentation	1m 32s
doc / linkcheck / Check external links	39s
pytest / Run unit tests (3.10, ubuntu-24.04)	1m 24s
pytest / Run unit tests (3.11, ubuntu-24.04)	1m 4s
pytest / Run unit tests (3.9, ubuntu-24.04)	1m 15s
pytest / Run unit tests (3.12, ubuntu-24.04, qrules)	4m 47s
pytest / Run unit tests (3.9, macos-14)	53s
style / Run local pre-commit hooks	50s
style / Run taplo through pre-commit	0s
style / Push changes	0s
doc / Upload to GitHub Pages	0s
	12m 43s

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