Custom Prompt Support with "auth0 universal-login customize" command

[WorldOfByrd]

Checklist

• [X] I agree to the terms within the Auth0 Code of Conduct.

Describe the problem you'd like to have solved

I would like to preview and deploy Custom Prompts from the Auth0 CLI, similar to custom text and theme settings when running auth0 universal-login customize

Describe the ideal solution

A new tab in the WYSIWYG editor that allows you to create, update and view Custom Prompts rather than needing to deploy to an environment to review look and feel.

This would assist in live editing and troubleshooting, and speed up time-to-deliver for additional Custom Prompts.

Alternatives and current workarounds

No response

Additional context

No response