feat(websocket): Implement WebSocket server functionality with client management and broadcasting capabilities

- Added server.lua to handle WebSocket server operations including starting, stopping, and managing client connections.
- Implemented message handling and broadcasting features for connected clients.
- Created a preferences panel for WebSocket settings including server mode, client URL, and connection status.
- Added CSS and HTML for the preferences panel to enhance user interface.
- Included image assets for the WebSocket preferences panel.
- Established a JSON encoding function for action queries and integrated action chooser functionality.