feat: print workflow URL to job summary

[c-dilks]

Add an option to print the downstream workflow URL to the job summary, which is easier than looking for it in the log file.

I was hoping the summary would print while the downstream job is running, but it seems to only print after it's done...

[simon-karlsson]

This would be great! Was looking for this feature as well 👍

[c-dilks]

I was hoping the summary would print while the downstream job is running, but it seems to only print after it's done...

According to the documentation, the summary does not appear until the job finishes, so if wait_workflow is true, unfortunately the user must wait for the triggered workflow to finish before being able to see the summary.

[bdice]

This would be a nice improvement. I was seeking the same feature.