Refactoring to separate app from renderer

CMakeLists.txt

doc/AppearanceInterface.md

src/CMakeLists.txt

src/Gui/ControlDialogWindow.hpp

src/Gui/MainWindow.cpp

src/Gui/MainWindow.hpp

src/Gui/RendererControl.cpp

src/Gui/RendererControl.hpp

src/Gui/RendererPanel.cpp

src/Gui/RendererPanel.hpp

src/RadiumPlayer.cpp

src/RadiumPlayer.hpp

src/Renderer/AdvancedRenderer.cpp

src/Renderer/EnvMap.cpp

src/Renderer/EnvMap.hpp

src/Renderer/Passes/EnvLightPass.cpp

src/Renderer/Passes/EnvLightPass.hpp

src/Renderer/Shaders/AccessibilityPass/blurao.frag.glsl

src/Renderer/Shaders/AccessibilityPass/ssao.frag.glsl

src/Renderer/Shaders/AccessibilityPass/ssao.vert.glsl