Refactor the way integration tests are executed

[aaronzi]

Currently, the integration test component is started using the MQTT resource files. However, for integration testing of other features to work, a more modular approach should be considered.

This ticket would encompass:

1. designing a better way to handle tests
2. adding integration tests for the existing test suites

Entry points

1. https://github.com/eclipse-basyx/basyx-databridge/blob/main/databridge.component/pom.xml