[FEATURE] Better Elytra

[Tcm9]

Describe your feature request.

Elytra always starts when double jump is pressed. And also only when you are in the air.

• - Keybind to start from flying should be changeable -> e.g. no double jump but sneak to start.

• - Elytra should always be startable. (So you can squeeze through a 1x1 hole).

• - Flying should be able to be canceled at any time.

Additional context

No response