Publish and pull into a project for testing

[broccolini]

Some setups we might want to test with:

• prototyping a static page
• a Next.js project
• Gatsby
• server-side rendered

[shawnbot]

This is underway in Launch, right? /cc @emplums

[shawnbot]

Also, @imgonnarelph is doing this in https://github.com/github/cat/pull/169 right now and would love our input.