RELIC: Add WebSocket Support

[klkucaj]

Is your feature request related to a problem? Please describe.
The framework currently lacks WebSocket support, limiting its ability to handle real-time, bidirectional communication use cases. WebSocket support is essential for applications requiring live updates, chat functionality, or other real-time features.

Describe the solution you'd like
Introduce WebSocket support with the following capabilities:

• Ability to establish WebSocket connections and handle events (e.g., onConnect, onMessage, onClose).
• Support for broadcasting messages to multiple clients.
• Middleware for authentication and validation during WebSocket handshake.
• Options for custom message handling and connection lifecycle management.

Describe alternatives you've considered

• Using a separate WebSocket server alongside the framework. While feasible, it adds complexity and makes integration with the framework less seamless.

Additional context
Adding WebSocket support will enhance the framework's real-time capabilities and make it suitable for modern applications that require low-latency, continuous communication.