⚡ Implement Real-time Features with WebSocket

[ChristianTonny]

📋 Overview

Add real-time capabilities using Socket.IO for live notifications and updates.

✅ Acceptance Criteria

• Socket.IO server configured
• JWT authentication for WebSocket connections
• Real-time booking notifications
• Technician availability broadcasts
• Room-based messaging system
• Connection handling and error management

🔧 WebSocket Events

join-room, update-availability, booking-update
notification, booking-status-changed, technician-availability

⏱️ Estimated Time: 5-6 hours