Using rxjs/webSocket on a server

Feature Request

Right now WebSocketSubject only accepts a constructor. Can this be changed to also accept an existing socket in the config?

Specifically, my use case is that I'd like to use rxjs with websocket/ws on my server, and their API would allow me to do something like:

wss.on("connection", (ws: WebSocket) => {
  const rxjsWebSocket = webSocket(ws); // Wrap the node WebSocket into a subject.
});

wrt api compatibility, I think it's reasonable to assume the web socket remains w3c compatible instead of worrying about the NodeJS.WebSocket API. There are various compatibility shims to adapt the assorted NodeJS variants to w3c sockets. I'm curious if this was an intentional choice to not allow wrapping an existing socket or if this can be done?

Start with src/internal/observable/dom/WebSocketSubject.ts at the constructor and inspect the webSocket entry point. Determine how an existing W3C-compatible socket could be accepted for the websocket/ws server use case, then verify that wrapping such a socket works without changing the existing constructor behavior.