This utility converts saved vore belly configuration from the legacy /datum/belly
typed saved in a BYOND savefile to the /obj/belly
structure stored in JSON files.
$ DreamMaker BellyConverter.dme
$ DreamDaemon BellyConverter.dmb -trusted -params player_saves_root=path/to/your/data/player_saves/
Note: The slash on the end of the path is required