feat: enhance Swagger specification with new response schemas and pro…

…perties

- Added detailed response schemas for various API endpoints, including support for HTTP status codes 201 and 200.
- Introduced new properties in existing schemas, such as `content` and `schema`, to improve API documentation clarity.
- Updated multiple DTOs to include required fields and descriptions, enhancing the overall structure and usability of the API.
- Refactored existing schemas to ensure consistency and better alignment with the latest API features.