Solas Shader

Features added/changed:

+ Added generated nebula to the night sky
+ Reworked the atmosphere once again for more vibrant colors, smoother gradients and better colors
+ Improved lighting on volumetric clouds
+ Added a config menu for creative light block color
+ Fixed water fog having different intensity underwater and outside
+ Added iPBR handling for glow item frame. Items placed in it will not glow brightly
+ Tweaked night colors

Features fixed:

+ Fixed Voxy water disappearing in very far LODs
+ Fixed incorrect GGX specular highlights model that has been present since the very first version of Solas
+ Fixed rain puddles not working
+ Fixed entities turning dark when activating POM