limactl shell: ask whether to start the instance if not running #5991

Job	Run time
Colima (v0.6.5)	8m 53s
Integration tests	14m 16s
Integration tests (on Linux) (alpine.yaml)	6m 23s
Lints	1m 50s
Integration tests (on Linux) (debian.yaml)	9m 15s
Integration tests (on Linux) (fedora.yaml)	6m 44s
Spell check	7s
Integration tests (on Linux) (opensuse.yaml)	9m 55s
Integration tests (on Linux) (docker.yaml)	7m 13s
Unit tests (1.22.x)	57s
Integration tests (on Linux) (../hack/test-templates/alpine-iso-9p-writable.yaml)	5m 44s
Unit tests (1.23.x)	4m 12s
Integration tests (on Linux) (../hack/test-templates/net-user-v2.yaml)	8m 21s
Integration tests (on Linux) (../hack/test-templates/test-misc.yaml)	19m 28s
Upgrade test (v0.15.1)	11m 2s
VMNet test	23m 50s
vz (default.yaml)	10m 33s
vz (fedora.yaml)	10m 8s
Windows tests	4m 59s
	2h 43m 50s

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