add support for wss:// to fednode

[jdogresorg]

xcp-proxy works great via http/ws requests, but fails on https/wss requests due to not having support for SSL requests.

We should update fednode to add support for wss: (secure websockets) in addition to ws: (websockets)

Should update xcp-proxy docker config to handle ws/wss if possible... otherwise, create new docker xcp-proxy-ssl

For ssl cert, use same self-signed cert as we use in counterwallet.. setup config at config/xcp-proxy/ssl/