Added form that will direct to download modules, allow modules to bbe...

Added form that will direct to download modules, allow modules to bbe installed, and allow a curated list of provider modules tpo be configured all from one place. This creates a one-stop shop for setting up the AI module when using Drupal CMS. #3484549

NOTE: this does not replicate functionality to allow users to download new provider modules themselves: I don't think it is sensible for this module to try to replicate Core or the Project Browser module's functionality as this will just lead to confusion and further problems.

Closes #3484549