All Planned Gamerules Added!

This update is for 1.21.10 for now, I will be making some backports here soon back until 1.16, I just need to find the time!

GameRule	Fabric	Paper	Spigot	NeoForge
doesMossSpread	X	X	X	X
doesGrassSpread	X	X	X	X
canPickupProjectiles	X	X	X	X
doesPlayerHunger	X	X	X	X
doItemsDespawn	X	X	X	X
doDragonEggsDropOnRespawn	X	X	X	X
doesInfinityNeedArrow	X	X	X	X
doPlayerHeadsDrop	X	X	X	X
playerHeadDropChance	X	X	X	X
doMobHeadDrop	X	X	X	X
mobHeadDropChance	X	X	X	X
doesObsidianGenerate	X	X	X	X
doesStoneGenerate	X	X	X	X
doesCobblestoneGenerate	X	X	X	X
doesBasaltGenerate	X	X	X	X

Removed doesVinesSpread as you can do this in vanilla by shearing them Had to remove canAnvilCostTooMuch for now as it is near impossible to do server side in a stable format.