Zak

Alternate sit mechanism

3

This PR rewrites the sit/animate interaction system. The new system utilises the metadata in GLTF models to create more detailed interaction targets that don't require meshes. The GLTF metadata contains...

A new state needs to be added to keep track of the player's sitting/interactions.

2

Current issues: - **(A)** ~~Interaction icons still show when sitting~~:  Fixed with commit [43d519c](https://github.com/vircadia/vircadia-web/commit/43d519cccc6e79423005610db738da1960b6d80b). - **(B)** Multiple players can occupy the same seat:  Keeping track of sitting state...

Some interactable objects include animations in their mesh/node/armature. These animations should be played whenever the object is interacted with. For example, auditorium seats should play an animation that folds them...

Relates to #137.

> Difficult to say. I did discover that you can currently load any mesh as an avatar even if there is no bone. There might be a time when this...