Rewrite project page according to guidelines

Problem/Motivation

The project page description should be updated to provide users with more enough information about the module. It can also include installation steps, similar modules etc.

Proposed resolution

Recommend following the Drupal guidelines on project documentation:
https://www.drupal.org/docs/develop/managing-a-drupalorg-theme-module-or... →

And more specifically, aligning the project with the Project page template:
https://www.drupal.org/docs/develop/managing-a-drupalorg-theme-module-or... →