Add pixi support #23

Job	Run time
ubuntu-latest - Env all Release	3m 38s
ubuntu-latest - Env all Debug	2h 19m 23s
ubuntu-latest - Env all-py39 Release	2h 29m 8s
ubuntu-latest - Env all-py39 Debug	8m 46s
macos-latest - Env all Release	5m 47s
macos-latest - Env all Debug	8m 35s
macos-latest - Env all-py39 Release	1h 21m 47s
macos-latest - Env all-py39 Debug	1h 4m 45s
macos-13 - Env all Release	7m 26s
macos-13 - Env all Debug	15m 36s
macos-13 - Env all-py39 Release	2h 59m 0s
macos-13 - Env all-py39 Debug	2h 3m 50s
windows-latest - Env all Release	3h 51m 1s
windows-latest - Env all-clang-cl Release	6m 39s
check-macos-linux-windows-pixi	7s
	17h 5m 28s

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