docs: Guide to add new mkosi images for new OS support in sev-certify… #183

Job	Run time
ubuntu-25.10	5m 43s
rocky-10	4m 47s
ubuntu-25.04	4m 45s
fedora-41	5m 58s
debian-13	5m 26s
centos-10	4m 55s
debian-forky	5m 2s
create new release for tagged or latest assets	-1s
	36m 35s

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