Draft: xrt: Adds extensions XR_META_body_tracking_full_body/calibration/fidelity
An extension of the MR !2178 (merged), adds the following additional extensions of XR_FB_body_tracking
:
XR_META_body_tracking_full_body
XR_META_body_tracking_calibration
XR_META_body_tracking_fidelity
These extensions are currently unpublished and will be left in draft state until they are published in the spec.