Document the order of RSM transformations that should be applied to the node hierarchy

[rdw-software]

Lots of things can go wrong here. Every step needs to be documented, as part of the Rendering category.

Incomplete roadmap:

• [ ] Bounding box realignment (see info provided by Doddler)
• [ ] Initial placement (model to world space transform)
• [ ] Animation keyframes

Just putting this here as a reminder; there's much more to add. I'll revisit this after re-implementing RSM(2) rendering.