Add order history and tracking API

Implement endpoints for order history and tracking.

Endpoints:

• GET /api/orders (list user orders)
• GET /api/orders/{id} (order details)
• GET /api/orders/{id}/history (order status history)
• GET /api/orders/{id}/tracking (shipping tracking)

Features:

• Pagination for order list
• Filter by status, date range
• Sort by date, amount
• Export order history (CSV/PDF)
• Integration with shipping carriers for tracking
• Real-time tracking updates

Carrier Integrations:

• FedEx API
• UPS API
• USPS API