Feature Request: More verbose messaging when CI/CD pipeline validator fails

Proposal

While troubleshooting some pipeline validation failures for workflow rules with a customer, we determined that more verbose messaging when the validator fails would be very helpful in understanding where the validation fails, which would then facilitate a faster resolution.

If possible, I propose that we add a more verbose message to the pipeline validator. An MVC (minimum viable change) might be to simply mention the line number where the first failure exists.

Related Zendesk ticket (internal only): https://gitlab.zendesk.com/agent/tickets/657046