chore: add CODEOWNERS
Adds CODEOWNERS with @andunn as default owner and an explicit reviewer line on .gitlab-ci.yml. Part of a tidy pass across the three projects touched in the fips-strict work (kaniko, lab/rootless, lab/airgap-fips).
Adds CODEOWNERS with @andunn as default owner and an explicit reviewer line on .gitlab-ci.yml. Part of a tidy pass across the three projects touched in the fips-strict work (kaniko, lab/rootless, lab/airgap-fips).