Create tag when target branch build succeeds
Description
don't create tags on target branches with failed (or pending) builds.
Proposal
i envision an opt-in feature or option that allows tag requests to be queued up, similar to the "merge when build succeeds" feature of merge requests. it would be nice to be alerted when new tags are created (in general), or if queued tags fail due to a failed build. deferred tagging can be overridden, just like merge requests.