📊 Implement Missing Database Models and Relationships

[ChristianTonny]

📋 Overview

Extend database schema to support complete booking system.

✅ Acceptance Criteria

• Booking model created with relationships
• Service/Category models implemented
• Review and Rating models added
• Notification model created
• Database indexes added
• Migration files created
• Seed data script created

🔧 Required Models

Booking (with status enum)
Service (with categories and pricing)
Review (rating and comments)
Notification (real-time updates)

⏱️ Estimated Time: 4-5 hours