Add Sprite + Open to add custom graphic object

assets/textures/Image_Test.png

source/engine/graphics/front/engine/Engine.cpp

source/engine/graphics/front/engine/Engine.hpp

source/engine/graphics/front/engine/Layer.hpp

source/engine/graphics/front/engine/Renderer.cpp

source/engine/graphics/front/engine/Renderer.hpp

source/engine/graphics/front/module/FrameBufferMerger.cpp

source/engine/graphics/front/module/FrameBufferMerger.hpp

source/engine/graphics/front/module/Module.hpp

source/engine/graphics/front/module/QuadGraphicModule.cpp

source/engine/graphics/front/module/QuadGraphicModule.hpp

source/engine/graphics/front/module/QuadInstanced.cpp

source/engine/graphics/front/module/QuadInstanced.hpp

source/engine/graphics/front/object/Image.cpp

source/engine/graphics/front/object/Renderable.hpp

source/engine/graphics/front/object/Sprite.cpp

source/engine/graphics/front/object/Sprite.hpp

source/engine/graphics/utility/isometric_sorter.cpp

source/engine/graphics/utility/isometric_sorter.hpp

source/engine/graphics/utility/ref_set.hpp