Chat test

Summary by Bito

• Integrates a comprehensive admin controller to offer new endpoints for managing categories, products, users, and profiles.
• Adds a file handler module to manage file operations while addressing and flagging potential security issues.
• Adds a DAO for cart product management to streamline database interactions.
• Introduces a new document providing an extensive Python code review checklist with detailed best practices and examples.
• Updates the Google Java style guide with detailed best practices and examples.
• Overall summary: Introduces new features extending project functionality by adding a file handler module, admin controller, DAO for cart product management, and comprehensive coding standards documentation including Python code review checklist and updated Java style guide to reinforce coding practices and improve maintainability.