Matrix / Vector glsl implementation

[AODQ]

matrix / vectors should have GLSL operations. Makes it easier to write/read graphics math, and also makes it easier to transcribe CPU math to GPU math & vise versa.

this includes GLSL free-form functions and swizzling, though the latter is probably difficult to implement correctly.

ei of what it would be able to do

vec3 SomeFunc(vec3 wi, vec3 wo, vec3 nor, float roughness) {
  vec3 H = (someMatrix * vec4(normalize(wi + wo), 1.0f)).xyz;
  roughness *= length(H);
  H = normalize(H);
  return dot(H, nor) * smoothstep(0.2f, 0.6f,  roughness);
}