Allow for different outputs on facial gestures

[tqphan]

Would it be possible to implement eyebrows raise and mouth open for additional switches?

[willwade]

This *I think * is feasible. Ref https://google.github.io/mediapipe/solutions/face_mesh - we'd have to create algorithms for detecting the movement or change in movement. If this is tricky we'd have to consider this as part of the tensorflow model work #39