Add wss (ssl) websocket functionality, along with account/password authentication

Add those (optional) ssl and authentication features to both leointeg, and leoserver.

Leo Group thread: https://groups.google.com/g/leo-editor/c/iMU6Wv8EgDg

Documentation link to get started: https://stackoverflow.com/questions/46852066/how-to-create-python-secure-websocket-client-request