* fix(face-landmarks): work only when one face is detected
* fix: remove redundant check for detection
* fix(face-landmarks): re-center and stop when more faces detected
* fix: remove faceCount checking when sending message from worker
* fix: add again the faceCount
* fix: add comment
* code review
* fix(face-landmarks): set max detected faces up to 4
* add(face-landmarks): config for max faces detected
* fix(config.js): default value for capture interval face-landmarks
* add missing coma