Add NixOS #50

Job	Run time
build / build (alpine318)	8m 29s
build / build (alpine319)	8m 55s
build / build (alpine320)	5m 31s
build / build (alpine321)	5m 38s
build / build (debian12)	10m 53s
build / build (fedora41)	13m 5s
build / build (fedora40)	13m 25s
build / build (opensuseleap156)	19m 8s
build / build (opensusetumbleweed)	20m 10s
build / build (silverblue41)	23m 24s
build / build (silverblue40)	13m 46s
build / build (ubuntu2204)	16m 48s
build / build (ubuntu2404)	18m 58s
build / build (ubuntu2410)	18m 43s
build / build (nixos)	12m 32s
	3h 29m 25s

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