Ryan Roden-Corrent e6a2803c31
Port rlights.h and shaders_basic_lighting.
I wanted to add lighting to a zig/raylib project, and hit some ABI
compatibility issues with rlights.h. The C is pretty simple, so I just
ported it, and figured it would be useful to have here in case someone
needs the same.

I think it might be useful in the main library, but in raylib it is just
an example, so I followed suit.
2021-07-24 16:17:20 -04:00
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