Check unsupported Docker Compose features

[davidkopp]

At the moment GMT only supports a subset of the Docker Compose specification.

It would make sense to check if there are unsupported features used in a usage_scenario.yml and throw an error, so the user gets aware of it.

In this context, it would make sense to introduce a new runner argument --skip-unsupported so unsupported features get skipped.

This idea was proposed by @ArneTR in the comment https://github.com/green-coding-berlin/green-metrics-tool/pull/568/files#r1413023920

[ribalba]

Just for reference we do some checking here:
schema_checker = SchemaChecker(validate_compose_flag=True)
We could probably use this to implement this functionality.

[ArneTR]

I think they flag to go is this: ignore_extra_keys=False (https://github.com/green-coding-berlin/green-metrics-tool/blob/11b2fe8165030745c82016b31e023407d81da484/lib/schema_checker.py#L125)

Prioritized this issue for Q1. I think it should be rather easy to set up. More work will be changing the example applications

[ArneTR]

Also another thing we need to bring into this feature: This needs to be the standard flag for exectuion when running in cron/cluster mode. So it has to also be brought into the jobs.py