Big Graphics update

Separated LightManager
Added Sprite class
Added View class
Camera is no longer a SceneNode
Fixed Material not invalidating programs
Renamed CameraPosition uniform to EyePosition
Renamed VisibilityTest to FrustumCull


Former-commit-id: ff7fbe4d9b31a3c269baab0b48c6faa347a12161

include/Nazara/Renderer/RenderWindow.hpp

@@ -58,6 +58,7 @@ class NAZARA_API NzRenderWindow : public NzRenderTarget, public NzWindow
 	private:
 		bool OnWindowCreated() override;
 		void OnWindowDestroy() override;
+		void OnWindowResized() override;
 
 		NzClock m_clock;
 		NzContextParameters m_parameters;