Build integration testing package

[devlace]

As part of the release process, we want to be able to run integration tests when changes are deployed to STG environment.

Related work:

• Integration tests as part of the existing parking sensor sample

DoD:

• [ ] Integration test package that can trigger a run of the data pipeline and check if results in the warehouse are correct.
• [ ] Associated documentation of how to run the package locally.

Out of scope:

• Integration tests run as part of release pipeline. See this task: #810