Better Animations

Updated and tested on 1.21.1
Further refinements to legs while floating in water

Fixed some issues from the previous update breaking some older animations while swimming and gliding with elytra

Added leg movements to the 'in water' animation

Added a paddling animation while not swimming but when the player is submerged in water.

Part 2 to a flying update:
Fixed some critical bugs with head movement when flying and legs, made leg animations more subtle.

Part 1 to a flying update. Arms fold out while flying

Part 1 to a elytra flying update. arms fold out while flying

Part 3 to the swimming update, fixed elytra clipping while swimming.

Part 3 to the swimming update, fixed a bug with the cape while swimming backward.

Part 2 to the swimming update. Fixed wierd cloak behaviour

Part 1 to a swimming animation rework