Modular Minimap for CopperCube

CopperCube has long been deficient of a proper way to handle minimaps. This is a high-performance way of handling it.

The map itself is a hybrid HLSL/GLSL shader that draws a plane primitive directly onto the camera. It can be calibrated in a number of different ways for odd shapes, offsets, some U/V controls, and it accounts for a couple different types of camera movement. It allows mapping a variety of different nodes to do different things within the minimap pipeline. It doesn't do a whole lot of work per draw call so it shouldn't negatively affect performance in any way.  Please report any bugs in the comments, I'll try to address them when I have time.