Feature: Add step README management

[evamaxfield]

Use Case

Please provide a use case to help us understand your request in context
The auto-generated README may not always be enough for production workflows where each step can be further explained with examples.

Solution

Please describe your ideal solution
Allow the passing of a path to the step init for a README path, which similar to Q3D, is used as a template where more information can be added by the process itself later on during upload. Specifically, the links to the repo, branch, and commit for reproducibility.

Alternatives

Please describe any alternatives you've considered, even if you've dismissed them