feat(nixiso): disable timeout, add settings to quick apps #312

Job	Run time
shell	1m 25s
packages (beekeeper-studio-ultimate)	1m 11s
packages (cockpit-benchmark)	43s
packages (cockpit-docker)	44s
packages (cockpit-file-sharing)	43s
packages (cockpit-machines)	45s
packages (cockpit-tailscale)	46s
packages (cockpit-zfs-manager)	41s
packages (dashy)	1m 35s
packages (ente-desktop)	1m 9s
packages (iosevka-custom)	1m 2s
packages (seabird)	1m 11s
packages (switchup)	49s
	12m 44s

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