Exerimental WebRTC Support

[vangourd]

I have seen it suggested to implement WebRTC as a solution to the iPhone compatability problem.

It looks like there's a rudimentary example below of playing from mp4/h264 files from disk. I believe we are already using this codec (straight from the IP cameras) .
https://github.com/webrtc-rs/examples/tree/main/examples/play-from-disk-h264|

I'm still trying to figure out Moonfire's structure but the examples show usage of Tokio and from what I can tell this seems like a useful starting point for the backend implementation of WebRTC.

Some useful links I found trying to research the topic more.
https://www.html5rocks.com/en/tutorials/webrtc/basics/

I believe we need the STUN server to enable message passing of the SessionDescription. GetMedia isn't required because media isn't being collected on the client side. So permissions and what not aren't needed.