Bulk Upload of Users and Groups for Nuxeo Platform Directory

Provide the ability for a user to add users and groups via bulk upload. For example, enable ability to upload a CSV on the Users or Groups UI.

Example use case:
Big creative agency emails an Excel document of users they want to have access to some Big Banks nice DAM system, but big Bank doesn’t want to add them to their internal directory. Allow user to bulk import in the User and Group admin for Nuxeo.

Able to leverage Operation User.CreateOrUpdate