Add pixi support #5

Job	Run time
ubuntu-latest - Env all Release	15m 53s
ubuntu-latest - Env all Release -mavx2	18m 3s
ubuntu-latest - Env all Debug	43m 16s
ubuntu-latest - Env all Debug -mavx2	43m 41s
ubuntu-latest - Env all-py39 Release	10m 5s
ubuntu-latest - Env all-py39 Release -mavx2	9m 53s
ubuntu-latest - Env all-py39 Debug	36m 53s
ubuntu-latest - Env all-py39 Debug -mavx2	36m 4s
macos-latest - Env all Release	9m 36s
macos-latest - Env all Debug	22m 5s
macos-latest - Env all-py39 Release	7m 59s
macos-latest - Env all-py39 Debug	18m 29s
macos-13 - Env all Release	21m 39s
macos-13 - Env all Debug	37m 33s
macos-13 - Env all-py39 Release	15m 44s
macos-13 - Env all-py39 Debug	40m 29s
windows-latest - Env all Release	27m 6s
windows-latest - Env all-clang-cl Release	18m 11s
check-macos-linux-windows-pixi	3s
	7h 12m 42s

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