add rofiworld export, fix voxelgraph copy

data/models/rofi/pad_board.obj

src/algo/include/algo/misc.hpp

src/algo/src/misc.cpp

src/edit/include/edit/editor.hpp

src/edit/src/editor.cpp

src/filein/include/filein/module_loader.hpp

src/filein/src/module_loader.cpp

src/filein/src/rofiworld_loader.cpp

src/gui/include/gui/ui.hpp

src/gui/src/ui.cpp

src/rofi/include/rofi/module.hpp

src/rofi/include/rofi/rofiworld.hpp

src/rofi/include/rofi/voxel_graph.hpp

src/rofi/src/module.cpp

src/rofi/src/rofiworld.cpp

src/rofi/src/voxel_graph.cpp