Better Animations

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

Updated and tested on 1.21