Publish browser release data

[ddbeck]

This adds browser release information, like this:

{
  "chrome": {
    "name": "Chrome",
    "releases": [
      {
        "date": "2008-12-11",
        "version": "1"
      },
      {
        "date": "2009-05-21",
        "version": "2"
      },
      /* … */
      {
        "date": "2024-07-23",
        "version": "127"
      }
    ]
  },
  /* etc. */

Toward #1047

[foolip]

Is the intention that we should tag and release the commit that merges this PR? That's what we've been doing so far. If there might be other PRs merged before we release, then let's bump the version separately.

[ddbeck]

I've merged main back into this PR and this fell out of diff. I'll bump the version when we do an actual release (v1.2.0).

[foolip]

This is a nice touch, publishing the core browser set in the schema as well, indirectly.