Add a WebRTC adapter

[lemunozm]

In order to complete the web support it is needed to add a WebRTC adapter.

The list of candidates are:

• webrtc Seems official but in alpha stage?
• webrtc-unreliable: It's a part of the standard but seems more stable.
• web-sys seems to have support: https://rustwasm.github.io/docs/wasm-bindgen/examples/webrtc_datachannel.html

The only requirement is that the library allows using non-blocking with mio support.

[entropylost]

I would also like webrtc for p2p games.

[entropylost]

Also I think the webrtc crate seems to be a server-side implementation of webrtc, not bindings to one for the web, so maybe both are necessary?

[lemunozm]

Hi @iMplode-nZ,

I do not know webRTC in-depth, so for this feature, I will need some help from contributors or make time to analyze how it works before.

At this moment I can not answer your question with some "veracity", sorry :(

[entropylost]

Edit: Turns out I don't need webrtc.