Ensure good UX is maintaned after embedding the 3D edit view

As a user I expect the user experience of the 3D edit view to remain on the level it was before it was embedded inside the Design Studio main view. To ensure this the UX experts need to evaluate how the view behaves and file improvement tasks as necessary.

It is expected that on macOS platform the embedding will cause a noticeable hit to the performance of the 3D edit view editing tools. To counter this a texture sharing implementation needs to be added for macOS. Preferrably in the qml2puppet itself so that the 2D edit view performance is improved as well.