Add Window class

.gitignore

CMakelists.txt

assets/textures/Cube_Amber.png

assets/textures/Cube_Blue.png

assets/textures/Cube_Brown.png

assets/textures/Cube_Cyan.png

assets/textures/Cube_Dark_Green.png

assets/textures/Cube_Grass.png

assets/textures/Cube_Gray.png

assets/textures/Cube_Grayy.png

assets/textures/Cube_Green.png

assets/textures/Cube_Greeny.png

assets/textures/Cube_Inverted.png

assets/textures/Cube_Inverted_2.png

assets/textures/Cube_Magenta.png

assets/textures/Cube_Orange.png

assets/textures/Cube_Pink.png

assets/textures/Cube_Purple.png

assets/textures/Cube_Red.png

assets/textures/Cube_Redy.png