Request to create a gocv example that returns a modified stream to user

[Embiggenerd]

Summary

A an example of server-side processing such as face detection / gesture recognition on a webrtc stream (i.e: send my webcam output to Pion via webrtc, do some processing server-side, send the modified stream back to the browser for display)

Motivation

Seems to be more useful than showing the result in a window.

Describe alternatives you've considered

Pretty much just considered pion for this.

Additional context

This is quite useful - imagine streams that translate to a different language and display the closed captions in real time.