Added shaders and linux makefile
Support for frame time in App3d
Keyboard support: ESC  closes the application
Proper time support in shadertoy (and fixed it in the engine)
Dynamic resolution for windows
Simple raymarched sphere
Simple raytracer. WIP: Support for flyby camera
Basic support for moving camera
WIP: Support for stereo 3d
Fixed uv relocation in stereo. Stereo moved to vertical split screen
Fixed stereo resolution. WIP: Improving raytracer's lighting.
Extracted object color in pathTracer
Fixed basic algorithm for pathTracing
Dynamically switch between stereo and normal mode
Path tracing with anti alias
path tracing tests