tests

[MAIN] add ruff for autoformatting #921

Job	Run time
conda (3.11, macos-11)	20m 37s
conda (3.11, macos-12)	16m 26s
test-pip (3.11, windows-latest)	12m 11s
test-conda (3.11, ubuntu-latest)	9m 25s
build-and-test-pip (3.9, ubuntu-latest)	8m 58s
test-pip-MPI (3.9, ubuntu-latest)	10m 31s
docs (ubuntu-latest)	6m 1s
build-and-test-pip (3.10, ubuntu-latest)	9m 34s
doctests (3.10, ubuntu-latest)	3m 27s
build-and-test-pip (3.11, ubuntu-latest)	8m 45s
build-and-test-pip (3.12, ubuntu-latest)	9m 25s
	1h 55m 20s

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