Remove deprecated studio package and refactor agent integration
- Deleted the studio package, which is no longer in use, to streamline the codebase.
- Updated references in the agent and chat modules to utilize the new agent package instead of the deprecated neo package.
- Ensured that all related middleware and routing functionalities are now aligned with the agent architecture, enhancing overall system coherence.
- Integrated OpenAPI loading functionality into the engine's Load and Reload processes, allowing for better API management.
- Updated the OpenAPI configuration to set a default BaseURL and ensure it does not have a trailing slash.
- Implemented the Attach method to connect the OpenAPI server to the Gin router, facilitating API endpoint management.
- Removed the obsolete hello package to streamline the OpenAPI module.