Add "Change Owner" feature to CLI

[EricWittmann]

Feature or problem description

A recent change to the REST API for Registry is to allow the "owner" of an artifact to be changed. The owner is whichever user created the artifact. Now that the API supports modifying the owner, the CLI should support it as well.

This task is dependent on this PR:

Apicurio/apicurio-registry#2731

Proposed solution

The CLI should have a new action to allow the user to change the owner of an artifact. The action must support providing the Group and ArtifactID to identify the artifact. The Group can be optional and default to default.

Additional context

See the above PR for information about the new REST API endpoint that needs to be called.

Also note: only the current Owner of an artifact or any user with the Admin role is allowed to make this change.