raylib-d Create Light Sources

[jwatson-CO-edu via Digitalmars-d-learn]

I am attempting to recreate the [Raylib flat shading 
tutorial](https://www.raylib.com/examples/shaders/loader.html?name=shaders_basic_lighting) with raylib-d.  I have been able to find most of the necessary wrappers except the one the creates light sources. How do I create light sources in raylib-d?

```d
uint MAX_LIGHTS = 4;
//...
Light[MAX_LIGHTS] lights; // Error: undefined identifier `Light`
lights[0] = CreateLight(
    LIGHT_POINT, Vector3( -2, 1, -2 ), Vector3Zero(), 
Colors.YELLOW, shader
);
lights[1] = CreateLight(
    LIGHT_POINT, Vector3( 2, 1, 2 ), Vector3Zero(), Colors.RED, 
shader
);
lights[2] = CreateLight(
    LIGHT_POINT, Vector3( -2, 1, 2 ), Vector3Zero(), 
Colors.GREEN, shader
);
lights[3] = CreateLight(
    LIGHT_POINT, Vector3( 2, 1, -2 ), Vector3Zero(), Colors.BLUE, 
shader
);
```