[FEAT] Websocket Client API

[NeonDaniel]

Objective

A more fully-featured client device will need a persistent connection to handle asynchronous events from Neon, i.e. notifications, GUI updates, media playback.

Initial Implementation Requirements

• Ensure Session is properly handled by the MQ connector module or refactor so Hana clients manage their own session
• Update MQ connector module to forward GUI and enclosure events (maybe others)
• Implement an authenticated WS endpoint

Other Considerations

• How should connections to this endpoint be authenticated
• How can events here be documented
• Where should Message context be terminated? (does the client have to care)

[NeonDaniel]

Clients here should maintain session context locally and supply it with every request