feat: support for organization admins and changes to use role flag

[shreddedbacon]

General Checklist

• Affected Issues have been mentioned in the Closing issues section
• Documentation has been written/updated
• PR title is ready for inclusion in changelog

This adds a new command to list just the organization administrators and their role, this is list organization-admins

It removes the owner column from the list organization-users query too, as this doesn't work properly.