Adrian Valcarcel-Schott

I implemented support for reading an external command in #99. I would also be interested in implementing reading from a socket, is this something that you'd want to add @maximbaz?

I currently have it polling at the same rate as the webcam implementation. I haven't been able to test it as I don't have any external devices but I am...

@odiroot I'd love it if you could also test my branch to see if it works for you.