Integrity assurance docker improvements

[maurogioberti]

Description

This PR introduces several significant enhancements to the Integrity Assurance process within the project, focusing on Docker integration, new endpoint implementations, and improved testing strategies. The key changes include:

- Main changes include:
- Docker Integration for Integrity Assurance:
  - Implemented a Docker-based setup to ensure consistent and isolated environments for running Integrity Assurance tests.
  - Included a `docker-compose.yml` file for initializing a SQL Server container, which is now part of the Integrity Assurance initialization process.
  
- Database Seeding Enhancements:
  - Added SQL scripts for seeding test data during Integrity Assurance.
  - Ensured that the correct database context is used when running these scripts.

- New API Endpoints:
  - Implemented GET and DELETE endpoints in the TextController.
  - Added corresponding service and logic layers to handle data retrieval and deletion operations.

- Testing and Validation Improvements:
  - Added new integration tests (`GetTests`, `DeleteTests`) to validate the functionality of the GET and DELETE endpoints.
  - Introduced helper methods to streamline test assertions.
  
- Exception Handling Enhancements:
  - Improved exception handling in the service layer for handling missing records.
  - Ensured that the appropriate HTTP status codes are returned when exceptions are encountered.

Checklist

• Code compiles without errors.
• All tests pass.
• Newly added functionality has been tested.
• Changes do not introduce new warnings or errors.
• Code follows the project's coding style.
• PR is up-to-date with the main branch.

Testing Strategy

Integration Testing: The Docker-based setup was tested to ensure that the database initialization, migrations, and data seeding processes work correctly in an isolated environment.

Additional Notes

• The Docker setup for Integrity Assurance is a significant addition that requires Docker to be installed and running on the host machine.
• The new helper methods and exception handling improvements aim to enhance code readability and maintainability.
• This PR is currently in draft mode, and further refinements may be needed based on initial feedback.