Added better automatic selection for de- and encoder, capture and render

AVQt/AVQtShader.qrc

AVQt/CMakeLists.txt

AVQt/include/AVQt/capture/DesktopCaptureFactory.hpp

AVQt/include/AVQt/common/PixelFormat.hpp

AVQt/include/AVQt/common/Platform.hpp

AVQt/include/AVQt/decoder/IVideoDecoderImpl.hpp

AVQt/include/AVQt/encoder/IVideoEncoderImpl.hpp

AVQt/include/AVQt/renderers/IOpenGLFrameMapper.hpp

AVQt/include/AVQt/renderers/OpenGLFrameMapperFactory.hpp

AVQt/src/capture/DesktopCaptureFactory.cpp

AVQt/src/common/PixelFormat.cpp

AVQt/src/common/Platform.cpp

AVQt/src/renderers/DRM_OpenGL_RenderMapper.cpp

AVQt/src/renderers/DRM_OpenGL_RenderMapper.hpp

AVQt/src/renderers/OpenGLFrameMapperFactory.cpp

AVQt/src/renderers/VAAPIOpenGLRenderMapper.cpp

AVQt/src/renderers/VAAPIOpenGLRenderMapper.hpp

LibScreenCapture

Player/FrameSaverAccelerated.cpp

Player/OpenGlWidgetRenderer.cpp