*Finished organizing the app's code base

*Designed an extensible architecture, allowing plug-and-play functionality for future render schemes and resources.

*Implemented two versions of the Cook-Torrance BRDF: one using a GGX normal distribution and one using a Beckmann normal distribution
*Added new textures for determining material type and roughness (Cook-Torrance only)
*Optimized shaders

*Added camera animation when idle for 30 seconds (no collisions)

*General improvements to LibRendererDll

Author: iftodebogdan