Add address to customer

[gabriel790]

A new feature to add address information to customers in the customer management system.

Details:

• Customers should be able to have address information stored
• Address should include fields like street, city, postal code, country
• Need to support creating, reading, updating, and deleting addresses
• Address should be integrated into the customer profile

Acceptance Criteria:

• Address data model is created in the backend
• API endpoints for address CRUD operations are implemented
• Frontend UI for managing customer addresses is implemented
• Unit and integration tests are written
• Feature is documented