Consider using Issue Forms for collections-index.yml?

Hello! 👋

This is an _idea_. If this is out-of-scope or something that seems too costly to maintain, that's OK.


https://github.com/stefanbuck/ristorante
https://github.com/stefanbuck/awesome-browser-extensions-for-github
☝ basically that.

https://stefanbuck.com/blog/codeless-contributions-with-github-issue-forms

Why this would be a cool idea:
- Reduce the need to make tiny **manual** comments that could be done via a GitHub Action and a regex https://github.com/devcontainers/devcontainers.github.io/pull/159 https://github.com/devcontainers/devcontainers.github.io/pull/226
- Make adding a new collection more user-friendly (new issue instead of fork+PR)

I am willing to contribute code to do this. ❤️