Stunner - Case Modeler workbench integration

This subtask represents one of several reasonable unit of work towards completion of BAPL-314. See parent issue for further details & other subtasks.

Case Modeler Exposure

• Migrate CM dependencies into workbench so that it’s no longer a standalone
• Can users currently access CM?
• If not, determine how CM is to be exposed for new diagrams
• Implement access to CM