Document a mesh breakup tutorial

[adamkewley]

Estimate: 3-5d

Seems like a common use-case and doesn't necessarily require that everything is done in OpenSim Creator (e.g. it can prescribe using Blender or Meshlab)

Users typically get 3D scans from 3rd-party sources where they need to do things like:

• Clean up artifacts
• Break up the mesh into individual parts
• Identify joint locations etc.

At the moment, users are having to use a hodge-podge of Meshlab, Matlab, Rhino, Maya, and Blender to do it. OpenSim Creator has almost 0 % chance of competing with those products on 3D manipulation, but it can at least ensure that it has clear workflows from one to the other.

[adamkewley]

Might be related to mesh warping work around 0.5-0.8, because those workflows are mesh-centric and this would be an accompanying step.