Increased Mob Drops

A data pack inspired by Larger Ore Veins data pack and Gobber mod.

This data pack increases the amount of most mob drops, and makes some drops more common.

It multiplies most mob drop amounts by 15. Some are less or more. For example the leather from donkeys, mules and horses are only multiplied by 6. Some mob drops aren't even affected, like iron form iron golems, nether star from wither, and fishes' drops.