new: Add FogColor

[ToxicAven]

Describe the pull Adds FogColor, a module to change the color of the render fog.

Describe how this pull is helpful Closes #1120, and looks badass

[ToxicAven]

Let me know if I should use the ColorHolder, I didn't want to use it due to the Alpha slider not being used.

[scorbett123]

I believe that you can make a colour setting with alpha disabled. Or if not it can probably just get ignored.

[ToxicAven]

I believe that you can make a colour setting with alpha disabled. Or if not it can probably just get ignored.

Yes, It can be ignored. I am unsure if it can be removed from the GUI element, but if it can, I will gladly shift it to ColorHolder. Or if requested anyway, of course.

[scorbett123]

you can use

setting(name, defaultColor, false)

[ToxicAven]

you can use

setting(name, defaultColor, false)

I'll look into it, may just make the other two and see what liv thinks is the best option