Add the description to the survey prompt for credentials and parameters

[dgannon991]

What does this change

Optionally displays the description for parameters and credentials in the survey prompt (if present)

The following screengrab was generated with this credential set:

credentials:
 - name: kubeconfig
   path: /home/nonroot/.kube/config
   description: The path to your kubeconfig (usually something like /home/nonroot/.kube/config)
 - name: username
   env: USERNAME

What issue does it fix

Closes #3076

Checklist

• Did you write tests?
• Did you write documentation?
• Did you change porter.yaml or a storage document record? Update the corresponding schema file.
• If this is your first pull request, please add your name to the bottom of our Contributors list. Thank you for making Porter better! 🙇‍♀️

[schristoff]

Hey! Thank you so much for taking this on. We are actually the value of surveyOptions from #3100 , and then the description can be added to that options so we don't have to modify the function signatures. Would you be willing to refactor after #3100 is merged?

[dgannon991]

More than happy to! Hopefully github will let me know once that one closes, but feel free to give me a nudge if it looks like I've missed it :)

[kichristensen]

@dgannon991 #3100 is now merged. Thank you for looking into this