Auto-deploy PR previews

[thatrobotdev]

Hello!

This is a slightly complicated issue, if you want to look at issues geared more toward beginners, please check in the issues tab for issues labeled "first-timers-only"! With that out of the way, I need your help!

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I think it would be really useful to automatically generate previews of the site whenever someone submits a pull request, using something like a GitHub action to deploy a preview. I'm not exactly sure how to implement this, but it would preferably use GitHub pages so we don't need to spend any extra money or project complexity on creating deploy previews. It's possible that it is impossible to follow these specifications though.

Let me know your ideas! I've never done deploy previews for a static site without something like Netlify or Vercel, so we might need to use one of those platforms.

[S3cBar0n]

@thatrobotdev with what I know about Github pages, I don't think this is possible unless we have a Repo set aside specifically for staging branches.