Provide a way to run Mistral workflows without saving the result

Problem:

I want to test a new version of my workflow, but I don't want to update the workflow in Mistral because my new version may have issues.

Solution:

We have a `mistral run-action` command for running a single action and displaying the result.

It would be useful to have something similar for workflows: `mistral run-workflow workbook.yaml workflow-name '...input...'

This command would parse the workbook file, create the workflow execution, but wouldn't save the workflow/workbook. The execution would complete as normal. So you can see the result and output in mistral execution-list etc.

Alternatives:

You could change the workflow name, create the workflow, create the execution, wait for it to finish and then delete it.