~ Fixed some materials not showing up in the list.

~ Renamed fading_rainbow_hd_lit_smooth** materials to include 3 digits (now fading_rainbow_hd_lit_smooth0**). fading_rainbow_hd_lit_rough is now fading_rainbow_hd_lit_smooth001. These changes will break existing creations using these materials.
+ Added 100% roughness (smooth000) materials that are also more performant than the other smooth* materials due to not having phong or rimlighting. It still uses normal mapping.
~ Rimlight exponents now match phong exponents instead of being the inverse (reverts rimlight tweak from September 21).

~ Changed the format to DXT1, which saves a ton of space at no visual cost (I originally thought that DXT encoding caused discoloring, but this turned out to not be true).

~ Changed the Workshop category to Tool. There are no new changes to the addon itself.

~ Lowered resolution for high texture quality (mat_picmip 0). Higher texture quality settings remain unaffected.

~ Converted the color format to BGRA4444, which lowers file size at no visual cost.
~ Changed reflectivity to 1, 1, 1.

~ Replaced $detail parameters with $selfillum parameters in the emissive textures. This should greatly improve performance.
~ Made emissive materials emit less light.
~ Disabled half-lambert on all materials using phong.
~ Tweaked phong boost for rough materials.
~ Tweaked rimlight exponents for rough materials.
~ Reordered some shader parameters.
~ Compressed the material Lua file a little bit.

+ Added glowing materials for all smooth and rough reflection variants.

+ Added many more materials with different variations of smooth and rough reflections.
- Removed phong and rimlight from fading_rainbow_hd_lit. It's now in fading_rainbow_hd_lit_rough.
+ Added $nocull to all VertexLitGeneric and UnlitGeneric materials.

+ Added phong and rimlight to the VertexLitGeneric material
~ Simplified VMTs by removing quotation marks