More leather and meat

Makes animals drop more stuff

currently includes:

• All animals drop leather(except chickens)
• All animals drop more meat(except chickens)
• All animals drop bones
• chickens drop more feathers (8-16)
• horses, donkeys and mules now drop beef
• goats now drop mutton
• pigs drop more meat but less leather than cows

Now you don't need to get a million cows just for a bit of leather

Feel free to use this datapack wherever I don't care.

maybe will get updated in the future.