Generates a tileset from minimized atlas make sure to input the resolution for a single tile
layout of said atlas is
top left: connected in all directions
middle left: horizontal only
bottom left: no connections
top right: vertical only
middle right: horizontal and vertical
bottom right: unused
(see example here https://github.com/shadowmaster435/GodotTileSetGenerator/blob/master/src/main/resources/example.png)
