Story #9502: [EPIC] Contrainer Signing and Verification
As a user I can sign container image by providing signing policy config
Ticket moved to GitHub: "pulp/pulp_container/500":https://github.com/pulp/pulp_container/issues/500
As a result signature will be created and saved into the Pulp Container Registry Sigstore
It should be possible to sign whole repo, list of images or a specific image only.