Copy-paste across multiple editors.

Technical / Design Document: https://docs.google.com/document/d/1yhRDwHXOe2nuwPos2ta6AMhk7SaaCOYKPuq2pJ7Qsjs/edit?usp=sharing

Acceptance criteria

Within one Business Central:

• The selection from BPMN editor can be copied and then pasted in different BPMN editor.
• The selection from DMN editor can be copied and then pasted in different DMN editor.
• All properties of the selection are copied as well.