Use uv workspaces #1077

Job	Run time
Collect changes / collect-changes	14s
Python tests / unit-tests (py312)	5m 20s
Python tests / types-check	1m 46s
Python tests / unit-tests (py39)	3m 0s
Python tests / unit-tests (py313)	3m 29s
Python tests / unit-tests (py310)	2m 56s
Python tests / unit-tests (py311)	2m 54s
Python tests / lint-and-format-check	9s
status-check	3s
	19m 51s

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