Resolve "add helpers for CWL"

• CWL upload to harbor
• test with CWL
  • generic case
  • respect container?
  • make sure verification marking works
  • allow nested cwl files
• cwl lint
• preserve the default for no-CWL repositories
• Add docker requirement to CWL during upload

Closes #167 (closed)

Reviewed by

• @mlinhoff
• @mdalchen