Livestock Hooks#37

It would be great to get hooks for the following actions related to the new livestock update (OnLivestockAnimalFamiliarityAdded already exists as one). The code in parentheses are just the pieces of decompiled code that gave me the idea, though the hook can work differently obviously!

• Milking a cow (Cow.TryMilk)
• Shearing a sheep (Sheep.Shear)
• Selling an animal or wool (LivestockVendor.Server_AcceptOffer)
• Breeding (BirthOne)
• Growing to adult (GrowIntoAdult)