I don't have good enough programming knowledge to add full blown mod support. After thinking a bit most I could do it allow adding custom ghosts and their animations. Spent an hour on it and here's how it will work if it's done.
- Game will read all folder modders put in this directory.
- Blue one (name must be same) will have all data about the ghost and the one is red is sprite(can name anything as you need to put same in ghostdata.txt). Ignore the .meta ones as they will not appear for modders.
- Example of Nanashakusama from LSHRM. Right now the only thing done is playing hunt animation fully and going back to idle animation.
But... don't think anyone interested in creating custom ghosts for this game so... will not spend more time developing it for now.