added: Cara Face Tracker
added: decode cara udp packets
added: head rotation
added: hook into hifi interface
added: noise filtering to reduce rotation jitter
fix: tuned the roll and pitch jitter, round to nearest 1 dp instead of whole number
added: smile, surprise, anger to blendshapes
fix: roll, yaw direction
added: source comments
removed: debug print outs
Merge branch 'master' into add_cara_face_tracker
Merge branch 'master' into add_cara_face_tracker
fix: update code style to conform to hifi convention
fixed: restyled code for better readability
Merge pull request #3221 from lzuwei/add_cara_face_tracker

Add cara face tracker