cmd: Add 'version' option #852

Job	Run time
Check DockerHub secrets exist	1s
test (arch)	1m 11s
test (bookworm)	51s
test (trixie)	1m 1s
Build Docker container	24m 27s
Run unit tests	2m 5s
recipes on nofakemachine	51s
templating on nofakemachine	38s
debian (amd64) on nofakemachine	1m 0s
recipes on qemu	40s
templating on qemu	44s
partitioning on qemu	52s
msdos partitioning on qemu	1m 13s
debian (amd64) on qemu	6m 56s
recipes on uml	46s
templating on uml	39s
partitioning on uml	1m 13s
msdos partitioning on uml	1m 6s
debian (amd64) on uml	4m 57s
recipes on kvm	36s
templating on kvm	31s
partitioning on kvm	56s
msdos partitioning on kvm	35s
debian (amd64) on kvm	1m 10s
debian (arm64) on kvm	2m 19s
debian (armhf) on kvm	2m 29s
arch on kvm	1m 28s
apertis on kvm	1m 48s
allgreen	1s
Publish to GHCR	0s
Publish to DockerHub	0s
	1h 3m 4s

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