Function RGBToHSL

RGBToHSL(RGB: vec3): vec3
This function converts a color from RGB to HSL. Reference: https://en.wikipedia.org/wiki/HSL_and_HSV#From_RGB
Parameters
- RGB: vec3
  {vec3} A color expressed as Red (x [0, 1]), Green (y [0, 1]), and Blue (z [0, 1])
Returns vec3
The same color expressed as Hue (x [0, 360]), Saturation (y [0, 1]), and Lightness (z [0,1])