When creating a new relationship via the diagram editor, the name is not set

[willem-xbreeze]

[harmen-xb]

@willem-xbreeze I discussed this issue with Martin a while ago. Currently objects are always immediately created in the object model. I think we should defer this after knowing the basic properties of the new object.

This story is captured here: @willem-xbreeze This is indeed an issue I discussed with Martin. We need to decide on the object creation flow (it's not only for entities, but also for relationship etc.)

I made a story for this on the backlog to discuss: https://dev.azure.com/x-breeze/CrossModel/_workitems/edit/913

It's related to #83.