Add useTurnOnAnimationStart to restore turn behavior of earlygame vanilla swords

[Chicken-Bones]

What is the bug?

• [1.4] Feral Claws autoswing locks player facing direction #1770

How did you fix the bug?

Added Item.useTurnOnAnimationStart to allow items to change direction based on controlLeft and controlRight only between animations, and applied this to the relevant vanilla items.

Are there alternatives to your fix?

The new flag could instead be checked in HorizontalMovement alongside itemAnimation == 0 || inventory[selectedItem].useTurn, but this would require more patches, grant no additional useful functionality, and generally be more confusing.

Porting Notes

• Modders with early-game weapons which want to replicate this behavior should set useTurnOnAnimationStart on their items. Note that this removes the ability to kite backwards, and there is little reason not to set useTurn instead to allow the player to turn instantly while using the item.