Solas Shader

Features added/changed:

+ Added full support for Voxy mod. In the next Solas update I'll probably add screen space shadows to Voxy and DH LODs.
+ Remade and greatly improved volumetric clouds for better, more realistic lighting and shapes. Many things are still subject to change, but I'm mostly happy with them.
+ Completely reworked the Aurora Borealis. It is now much more realistic, dynamic and beautiful. And it's just the beginning so stay tuned!
+ Added generated emission to handheld and dropped items
+ Added shooting stars based on @SpacEagle17's implementation
+ Improved planar clouds lighting and blending
+ Added support for Colorwheel mod
+ Added rotating noise to the accretion disk of the Ender Black hole
+ Added subtle warping to clouds closer to the Ender Black hole to make them look like they're being pulled in
+ Added options to toggle specular highlights and textured fire/lava.
+ Added new materials to integrated PBR

Features fixed:

+ Fixed some options missing their translations
+ Fixed multiple compilation errors
+ Fixed shader not working with Distant Horizons
+ Fixed nether portals turning green
+ Fixed Ender Nebula not changing at all when the player travels large distances
+ Fixed moon phases being mirrorred horizontally