Run the CWL 1.0 and 1.1 conformance tests against a cwl-WES endpoint during CI

[mr-c]

Is your feature request related to a problem? Please describe.
Users need to know that they will have no problems running the CWL workflow against a cwl-WES endpoint.

Describe the solution you'd like
Running the conformance tests for the CWL standards will raise user confidence and identify issues before they are present in production systems.

Additional context
CWL v1.0 conformance tests: https://github.com/common-workflow-language/common-workflow-language/blob/master/CONFORMANCE_TESTS.md

CWL v1.1 conformance tests: https://github.com/common-workflow-language/cwl-v1.1/blob/master/CONFORMANCE_TESTS.md

[uniqueg]

Thanks @mr-c, this is really important! Will handle this as soon as we are done with our current major refactoring round.