Refactoring code

source/kernel/back/component/Graphical.hpp

source/kernel/back/component/Graphical.tpp

source/kernel/back/component/Physical.hpp

source/kernel/back/component/Physical.tpp

source/kernel/back/engine/Engine.hpp

source/kernel/back/engine/GraphicEngine.cpp

source/kernel/back/engine/GraphicEngine.hpp

source/kernel/back/engine/PhysicEngine.cpp

source/kernel/back/engine/PhysicEngine.hpp

source/kernel/front/Kernel.cpp

source/kernel/front/Kernel.hpp

source/kernel/front/component/graphic/Sprite.cpp

source/kernel/front/component/graphic/Sprite.hpp

source/kernel/front/component/graphic/TileMap.cpp

source/kernel/front/component/graphic/TileMap.hpp

source/kernel/front/component/physic/Fixed.cpp

source/kernel/front/component/physic/Fixed.hpp

source/kernel/front/component/physic/Movable.cpp

source/kernel/front/component/physic/Movable.hpp

source/kernel/front/component/physic/Tile.cpp