Extend modular space station

[FelixSchulthess]

Last semester a modular space station was created. It includes basic shapes, textures and a Lua script, that puts these cubes and cylinders together randomly on a rectangular grid.

Your task will be to extend this by new basic shapes and probably introduce support for a hexagonal grid. Furthermore, new texture sets will be needed. You could also think about introducing certain standard patters, so that the space station does not look too random.