- Added File utilities
* 'FileManager'
* 'BasicFileHandle'
* 'ImageFileHandle'
- Moved 'ResourceManager' from 'GraphicsContext' to 'Application'
- Added static 'Quit' function to 'Application'
- Added 'Camera'
- Added 'SetuniformMat4' to the 'Shader' , this is a temporary solution
- Added u_ViewProjection to glsl shaders
- Fixed 'Application's' placeholder delta time
- Fixed glfwKeyEvent returning KeyReleasedEvent on GLFW_REPEAT
- Note: Camera is not supported for DirectX for the time being due to hlsl not
supporting uniforms like glsl