Drupal 7 support

Problem/Motivation

There is an existing ticket for the Site Audit module: https://www.drupal.org/project/site_audit/issues/3331602 ✨ [Meta] Port Web UI to D7 to support migration off D7 Fixed , which needs to be solved for Drupal 7.

Steps to reproduce

1. Go to the ticket: https://www.drupal.org/project/site_audit/issues/3331602 ✨ [Meta] Port Web UI to D7 to support migration off D7 Fixed
2. Go to the Drupalpod extension
Expected Result
Drupal 7 should appear in the dropdown for Drupal core version:

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes