This work has been extracted from testcontainers#2202 and is related to testcontainers#2180. See the original PR for the full context and reasoning. This PR in particular moves all the simpler tests in one go, or adds a comment to any remaining tests that would not make sense to move (or could not be moved without exposing a lot of variables).

This will help with the documentation, since all examples will now have the module prefixes.