Tests

Add workflow to run e2e tests from lxd-ui #11223

Job	Run time
Code	10m 23s
Client (1.22.x, ubuntu-latest)	18s
Client (1.22.x, macos-latest)	24s
Documentation	4m 6s
Client (1.22.x, windows-latest)	4m 17s
System (1.22.x, cluster, dir)	12m 17s
UI e2e tests	21m 14s
System (1.22.x, cluster, btrfs)	12m 37s
System (1.22.x, cluster, lvm)	13m 20s
System (1.22.x, cluster, zfs)	13m 49s
System (1.22.x, cluster, ceph)	16m 12s
System (1.22.x, cluster, random)	14m 32s
System (1.22.x, standalone, dir)	26m 26s
System (1.22.x, standalone, btrfs)	25m 10s
System (1.22.x, standalone, lvm)	45m 7s
System (1.22.x, standalone, zfs)	42m 59s
System (1.22.x, standalone, ceph)	1h 6m 8s
System (1.22.x, standalone, random)	40m 16s
System (stable, cluster, dir)	12m 27s
System (stable, standalone, dir)	25m 36s
Trigger snap edge build	0s
	6h 47m 38s

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