Instantiate a new NativeHeadTracker for the given context

Property definitions

android $ NativeHeadTracker :: new
	# Instantiate a new `NativeHeadTracker` for the given `context`
	new (context: NativeContext) in "Java" `{
		return HeadTracker.createFromContext(context);
	`}
lib/android/cardboard.nit:43,2--46,3