Remove Renderer and glm

[renanbomtempo]

The original code that paved way for this project was developed with the intention of being a true game engine, which included a Renderer subsystem.

However, my current vision for the Nodens framework is for it to provide only what is necessary for a simple interactive application: an easy and intuitve way to create a UI (with 2D/3D graph plotting), a control loop to compute whatever is needed and a performance profiler.

For this reason, I'll be removing the Renderer subsystem as well as the vendor/glm module (which was only used by the Renderer).