Add Apache Kafka Event Interface For Repositories

[geso02]

#522

Description:

This pull request introduces an Apache Kafka event interface, enhancing message processing reliability and scalability, and making the system more suitable for larger and more demanding environments.

Key Features

• Kafka Integration: Adds Apache Kafka as a message broker, allowing both repositories and registries to utilize Kafka for event processing.
• Commit-Based Acknowledgments: Implements Kafka’s commit-based message acknowledgment to ensure reliable and confirmed message processing.
• Documentation: Updated README files with detailed instructions on setting up and configuring the Kafka event interface.
• Unit Tests: Comprehensive unit tests are included to verify the functionality and reliability of the Kafka integration, ensuring robustness under various conditions.

Thank you for reviewing this addition!

[aaronzi]

Hi @geso02,

thank you very much for your PR and the nice addition to BaSyx. Can you please check the AAS Environment. There is a test that seems to be failing.

[geso02]

I found some incorrect configurations in the upload within the AASEnvironment. The pathsToLoad used during bean creation was missing the @value annotation in all places. I've now added it. In the authorization test case, we then encountered an issue because basyx.environment was now being referenced, but this test was not concerned with it and did not provide mocks for it, causing it to fail. I've now pushed the changes again and will check if there are issues in other areas as well.

[geso02]

I’ve fixed the issue with the build by adjusting the registration of a Submodel that was intended for submodel-related tests but was mistakenly included in environment tests due to test dependencies. I’ve now ensured that the Submodel is only registered in the submodel tests using profiles, and it’s no longer active in the environment tests, which resolves the issue and allows the build to pass again.