Add rootless support #905

Job	Run time
build-linux (containerd-system)	56s
channel (ubuntu-latest)	34s
build-linux (containerd-tarball)	50s
channel (macos-13)	5m 31s
context (ubuntu-latest)	34s
channel (windows-latest)	43s
context (macos-13)	4m 39s
daemon-config (ubuntu-latest)	30s
context (windows-latest)	52s
daemon-config (macos-13)	5m 19s
lima-start-args	4m 41s
daemon-config (windows-latest)	47s
build-macos (macos-13)	1s
main (ubuntu-latest, pinned)	30s
build-macos (macos-12)	1s
build-windows	38s
main (ubuntu-latest, latest)	31s
main (ubuntu-latest, type=image,tag=27.3.1)	34s
set-host	36s
main (macos-13, pinned)	1s
main (macos-13, latest)	1s
main (macos-13, type=image,tag=27.3.1)	1s
main (windows-latest, pinned)	46s
main (windows-latest, latest)	46s
main (windows-latest, type=image,tag=27.3.1)	47s
	31m 9s

Provide feedback