feat: Add StatsGrid component for displaying delivery statistics

- Implemented StatsGrid component to fetch and display delivery statistics including total revenue, total packages, and trends.
- Integrated loading and error handling states for better user experience.
- Utilized lucide-react icons for visual representation of statistics.

feat: Create delivery service hooks for managing delivery updates

- Added hooks for fetching delivery details, updating delivery status, and adding location updates.
- Implemented mutation hooks for updating both status and location in a single request.
- Included error handling and cache management with react-query.

feat: Define shipment types for creating and editing shipments

- Created TypeScript interfaces for EditShipmentData and CreateShipmentData to standardize shipment data structure.
- Ensured type safety for sender and receiver information, including items and delivery fees.

feat: Implement utility function for status icons

- Developed getStatusIcon utility to return appropriate icons based on delivery status.
- Enhanced visual feedback in the UI by mapping statuses to corresponding icons.

Author: RabbitDaCoder