Oskar Pawica

Migration of the diff logic to oc-mirror

16

This PR is a follow-up of https://github.com/operator-framework/operator-registry/pull/969 and is being worked on simultaneously with https://github.com/openshift/oc-mirror/pull/497 **Description of the change:** The discussion on the diff logic started with https://github.com/openshift/oc-mirror/issues/453 issue where...