[WIP] Hiking Progress, Shader Changes (26-06-2023)

• Hiking progress.

Tomorrow, Linde will be blowing Daria behind a tree :D

• Shader Changes

Made quite a lot of changes and additions to my shader system. I've added a new dirt shader and added a new locational wetness shader. Previously, I would've used decals for locational wetness, but it never looked that great and it was prone to bugging because of how I light my pieces.

So, I've opted to instead use a shell and put the wetness on the shell, instead of using a decal. Bit less freedom in where the wetness is, due to seams, but it's either that or nothing.