Host PR branches somewhere publicly accessible

We want to be able to host a dev version of the website to make collaboration easier. The main issue stopping us is that github pages can only host a single branch.

Here are the some of the possible options:

- Vercel https://vercel.com
- https://vercel.com/pricing
- The main issue with vercel is that they ask too many github permissions when setting it up
- Cloudflare pages https://pages.cloudflare.com
- Netlify https://www.netlify.com
- https://www.netlify.com/pricing/
- Asks for a reasonable amount of permissions and I believe we can stay on the free tier
- Self-host
- Needs a server, needs to maintain it, needs something to autodeploy and generate url for deployed PR
- Not free

No repository files, tests, or entry points are named. Start by mapping the existing GitHub Pages deployment and PR workflow, then compare Vercel, Cloudflare Pages, Netlify, and self-hosting against permissions, cost, maintenance, and automatic preview URLs. Done means the project has a decided and documented way to publish publicly accessible PR branches.

Written by the indexing model from the issue text.