Solas Shader

Features added/changed:

+ Greatly improved water normals, light scattering and absorption
+ Reworked the lighting model on Ender Protoplanetary Disk (aka Ender Clouds). The lighting is now directional and depends on the black hole angle
+ Added options to change sun/moon and Ender Black Hole angles separately
+ Added colored lighting for newly introduced copper torches and lanterns
+ Adjusted light & shadow colors
+ Improved ground fog in jungle biomes
+ Added more blocks to iPBR specular mapping and emission

Features fixed:

+ Fixed some options missing translations
+ Fixed cloud shadows and crepuscular rays not working properly
+ Fixed Solas not compiling on OptiFine
+ Fixed some issues with Distant Horizons