More work to drivers

- Add gfx_test
- add texture loading to GfxOpenGL
- add full submit code
- add debug logging
- add construct and destroy functionality to Pool
- add command functionality
- add vertex and index pools to lithium (static and not threadsafe yet)
- Update GfxDriver Matrix with SetViewPort
- Add glfw (only dependency of gfx_test) maybe later required for input driver

backends/include/gfx_opengl.hpp

@@ -17,7 +17,7 @@ struct GfxOpenGLConfig {
 };
 class GfxOpenGL : public GfxDriverBase<GfxOpenGLConfig> {
  public:
-  GfxOpenGL() {}
+  GfxOpenGL(): GfxDriverBase("OpenGL2") {}
   ~GfxOpenGL() {}
 
   void SysInit() override;