How to do Interactive Build Promotion Step with new API

### How can we help?

I am not sure if this should be an enhancement request or a question, but is there a way to add an interactive build-promotion request using the new 'jfrog-plugin', i.e. instead of using addInteractivePromotion() from the declarative pipeline?

Start by reading the new jfrog-plugin API and comparing it with the declarative pipeline's addInteractivePromotion() method. Determine whether an interactive build-promotion request is supported; the issue is complete when the capability is either documented with usage guidance or its implementation scope is clearly defined.

Written by the indexing model from the issue text.