Scene Render Capture

We wanted a way to render 3D objects onto the UI. There's two parts to this, scenes you want to draw onto the UI ideally shouldn't exist in the main scene, it would suck to have to spawn a entity into the main world and hide it just to draw it onto the UI.

Instead, new scene worlds can be created and scene objects added to them.

Scene Objects are pretty much what the whole game uses to render the world so we can just use them without the overhead of creating new entities.

The second part is being able to render a scene world to a render target. Once you have the render target, that texture can just be drawn to the UI.

Because we have access to scene objects, they can also be placed into the main scene world. Imagine a pool table, instead of creating an entity per ball, you can just add balls as scene objects and they will render a model the same way a model entity would, without all the extra bullshit you don't need.

These model scene objects can be animated but right now the API just supports setting of bones. Next month I'll get it animating from the animgraph.

I got this working sooner than expected so here ya go