Support authToken on socket connection

[qcam]

Recently Phoenix has added support for a standard way to include "auth token" on connection over the sec-websocket-protocol header.

Implementation on Phoenix can be found at: phoenixframework/phoenix#6086

Would it be interesting to support that? Thanks.

[dsrees]

I believe this is something I have included in the 6.x branch. However, development has slowed on this project as life gets busy. If you're interested in opening a PR into main which adds support for this, I'll gladly review it