Get workflow id and test from WorkflowHub for tutorial using workflow from WorkflowHub

[bebatut]

It would be great for a tutorial using a workflow available on IWC/WorkflowHub to avoid adding the workflow to the tutorial but give its ID and that the workflow on WorkflowHub is displayed for the metadata on the top and that the tests from IWC are used

[hexylena]

As long as the WF is referenced in the tutorial (through one of the existing snippets) that will be easy to detect and won't require any additional author supplied metadata

while we are in parallel going to upload workflows to WFH ourselves this definitely makes sense to do, but yes will require some new code to

• detect that they're using those workflows
• on build, download a copy of the workflow
• so we can inspect which tools it uses (which might inflate download stats for better or worse) and use our existing mechanisms to compare against servers
• and then exceptions in relevant places so we don't try and link to an ephemerally downloaded file.

overall shouldn't be too bad to implement!