Hair and Fur Rendering/Shading

Got another feature request: would it be possible to add support for hair and fur rendering to cyclesgame? While it is may or may not be _possible_ to use blender's built-in hair simulation, I think it would be too intensive for realtime rendering if used as-is.

The issue names no files, tests, or entry points. First map cyclesgame’s rendering and shading path and compare it with Blender’s hair simulation; the issue provides no implementation scope or acceptance criteria, so those must be established before work can be considered done.

Written by the indexing model from the issue text.