Add pixi support #17

Job	Run time
ubuntu-latest - Env all Release	1h 58m 43s
ubuntu-latest - Env all Debug	1h 51m 6s
ubuntu-latest - Env all-py39 Release	1h 0m 17s
ubuntu-latest - Env all-py39 Debug	55m 6s
macos-latest - Env all Release	49m 7s
macos-latest - Env all Debug	54m 31s
macos-latest - Env all-py39 Release	50m 24s
macos-latest - Env all-py39 Debug	48m 55s
macos-13 - Env all Release	1h 50m 51s
macos-13 - Env all Debug	1h 56m 45s
macos-13 - Env all-py39 Release	2h 5m 10s
macos-13 - Env all-py39 Debug	1h 39m 13s
windows-latest - Env all Release	3h 10m 11s
windows-latest - Env all-clang-cl Release	4m 40s
check-macos-linux-windows-pixi	2s
	19h 55m 1s

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