ARKit iOS 14.0 Beta 1 to Beta 2 API Differences

Added ARGeoTrackingStateReasonWaitingForAvailabilityCheck

Removed ARSkeletonJointNameNeck

Removed ARSkeletonJointNameLeftForearm

Removed ARSkeletonJointNameRightForearm

Removed ARSkeletonJointNameLeftUpLeg

Removed ARSkeletonJointNameRightUpLeg

Removed ARSkeletonJointNameLeftLeg

Removed ARSkeletonJointNameRightLeg

Removed ARSkeletonJointNameLeftEye

Removed ARSkeletonJointNameRightEye

Removed ARSkeletonJointNameLeftEar

Removed ARSkeletonJointNameRightEar