Add new avatar rig

package.json

public/assets/avatars/Bot_Body_Mesh.glb

public/assets/avatars/Bot_Head_Mesh.glb

public/assets/avatars/Bot_LeftHand_Mesh.glb

public/assets/avatars/Bot_RightHand_Mesh.glb

public/room.html

src/components/avatar-customization.js

src/components/body-controller.js

src/components/hand-controls-visibility.js

src/components/hand-controls2.js

src/components/rig-selector.js

src/index.js

src/input-mappings.js

src/network-schemas.js

yarn.lock