This version should work in 1.20. I'm still testing it.

Added a feature to prevent a player's disguise in batusi mode from being changed.
Added an option to enable batusi for normal vampires (not nosferatu).
Unless the command sender issuing the disguise change has the "vampire.mode.batusi.disguise" permission node, the disguise command will fail while the target is in batusi mode.

Fixed an error with the set command and another one with v reload.
Fixed everyone being put into the permission group.