Support WebRTC Browser to Browser as a first class transport in js-libp2p and deprecate [webrtc-star](https://github.com/libp2p/js-libp2p-webrtc-star) and [webrtc-direct](https://github.com/libp2p/js-libp2p-webrtc-direct). - [x] support Circuit Relay v2: https://github.com/libp2p/js-libp2p/pull/1533 - [x] https://github.com/libp2p/js-libp2p-webrtc/pull/90
Support WebRTC Browser to Browser as a first class transport in js-libp2p and deprecate webrtc-star and webrtc-direct.