Rats

-Added Rat King, a new miniboss spawned by covering a rat with a Ball of Filth

-Added Diseased Garbage, a garbage variant that only spawns plague rats

-Added Purified Garbage, a garbage variant that only spawns rats without plague

-Added Compressed Garbage, a garbage variant that spawns double the amount of rats

-Added Rat Attractor, a new redstone block which attracts untamed wild rats

-Added Rat Upgrade Fragment, a new rare item that can be dropped from rats

-Added Plague Tome, a rare drop from plague rats that can spawn a Black Death

-Added Rat Upgrade Block

-Added Rat King's Crown

-Added Gilded Rat Flute, which can fire rats out of it at targets

-Fixed Plague Doctorate not working on Wandering Traders