Support split view in 3D

What is the benefit? Why is this valuable?

In 3D tooling a view where you can see the model from various angles is a commodity feature. In order to have similar user experience as other tools we need to have it as well.

What are common use cases?

3D scene creation, modifying 3D content, scaling etc.

Technical information

Idea is to have a toggle in the 3D view and when enabled, 3D view would be broken to four different screens, each having different camera projection. With context menu, the individual settings of a screen portion can be adjusted. See user stories for more details.

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