Turn Into Baby

- Updated datapack to 1.21.4+ - Simplified the logic that turns mobs into adults by using tags

## Features - Naming a mob "TurnIntoBaby" will turn it into a baby that won't grow up for a long, long time (virtually never). - Naming a baby mob "TurnIntoAdult" will revert the changes, turning them into an adult version of the same mob. - Renaming them will also refund the name tag, spawning a nameless name tag on the baby/adult you just converted. ## Known bugs - Frogs have an entirely different entity type for their baby form (tadpoles), and therefore won't be affected by this datapack. I might try to add something regarding that down the line, but as of this version it works as-is. Sorry! - Armor stands will also be turned into a small version of themselves when renamed "TurnIntoBaby", but won't turn into an adult armor stand when names "TurnIntoAdult". - Baby mobs that have inventories (like mules, horses, llamas, donkeys, wolves, camels, etc.) will keep their inventory and armor/carpets/etc., but players won't be able to interact with them anymore while they're still babies. Players will need to turn them back into adults to recover anything in their inventory. - In some instances, baby villagers which were previously locked into a profession might lose their AI.