Determine folder/file structure for community guidelines

Problem/Motivation

In ✨ Implement automatic community guidelines detection and merging system Active we built a way to merge community guidelines with our own guidelines.
Right now we've chosen to use surge-guidelines as directory, where we merge any markdown files in to the rules file we generate for ✨ Interactively install & configure AI coding standards Active

Steps to reproduce

Create a surge-guidelines directory in one of your modules and add some markdown files in there,
Require drupal/surge, run composer surge-scan and you'll see that it scans paths and finds the markdown file, and merges that in to a community standards option.

Proposed resolution

Ideally we have a better Drupal AI friendly way for this.
Maybe just a single file, or a better directory approach.

Remaining tasks

User interface changes

API changes

Data model changes