feat: spawn webrtc connections on separate threads

[ThaUnknown]

have each webrtc connection on a separate thread, currently even across multiple connections this library will never exceed 1Gbit/s, if each connection was on a separate thread, this could easily exceed 5Gbit/s

many methods however are sync, so if this was spawned on node workers, sync-threads would need to be used to make said async calls sync, is this a bad idea perf wise?

next issue is data channels and callbacks, maybe use comlink?