Serve schemas with application/schema+json and cache headers

[jdesrosiers]

We should be serving schemas with the proper media type and cache headers.

We've looked into this before. There was never a good solution while we were using Jekyll and Github Pages. Now that the new website is using Next.js and CloudFlare Pages, is there something between the two of those things that would allow us to solve this long-lived problem?

I imagine it could be done easily with Next.js if we had a backend, but I assume we're running as a static site. I recall that there wasn't a good solution using Cloudflare without Pages, but there might be something more at our disposal now that we're using Pages. Maybe @benjagm or @Relequestual have some knowledge about what can be done.

Example headers to cache for a year:

Content-Type: application/schema+json
Cache-Control: public, max-age=31536000, immutable

[jdesrosiers]

This looks like what we need, https://developers.cloudflare.com/pages/platform/headers