Support for new hair curves system.

[Hopefullyidontgetbanned]

currently hair is based on the particle system, eventually blender will remove this feature, we should anticipate this change and support the new hair system that took its's place. There are two issues preventing characters from utilizing this already

• Importing Hair
• Morphing doesn't work with manually imported hair curve I imagine this issue can be solved by attaching the hair curves to morphed vertices.

Here is the python for surface deform and Attach by nearest.

Improvements:

• Principled Hair BSDF is Cycles only, having the option for custom shaders would be welcome with the same preset system being used as inputs instead of new materials.
• Store Hair in NPZ files exclusively and export JSON for geo node configuration, this will reduce the size drastically, A dozen or so hairstyles in a blend file is about 63mb and 32bit precision NPZ files is about 11mb so about a 1/6th of the size.
• In addition to custom shaders for hair, be able to specify whether or not to use a new material or a preexisting one.