Set Up Main DI Container with Initial Services

[niden]

Set up the main Dependency Injection (DI) container for the phalcon/rest-api-v6 project. The DI container should encapsulate and manage the initial core services required for the application, including:

• Request service
• Response service
• Tag service
• Database connection
• Other foundational services as needed

Tasks:

• Implement the DI container setup
• Register core services to the container
• Ensure proper configuration and extensibility for future services
• Document the DI setup and service registration process

Benefits:

• Centralized management of services and dependencies
• Improved code maintainability and scalability
• Easier testing and configuration changes