Generates a .json file with coordinates determined by a graphical interface.
Filename : sets the name of the file when saved
X, Y and Z : Builds the grid with the corresponding entered values
Left Click : Places a single block. Press again to remove
Right Click : Places blocks when hovering over a slot. Press right click again on a slot to deactivate it.
'+' and '-' : Changes the current layer on which you place blocks
Save : Saves the project in the same folder as the executable