enumerated video devices
instance of dom element associated with webcam stream
active webcam stream
get webcam capabilities
get webcam constraints
webcam current height
get webcam label
is webcam paused
get webcam settings
get active webcam stream track
webcam current width
start method initializizes webcam stream and associates it with a dom video element
Optional
webcamConfig: Partial<WebCamConfig>
current webcam configuration