Include the latest Nodeinfo data in /.well-known/nodeinfo?

[annando]

Additionally to providing the links to the specific nodeinfo versions, the endpoint /.well-known/nodeinfo could also include the highest supported nodeinfo data. For example:

 {
    "links": [
        {
            "rel": "http://nodeinfo.diaspora.software/ns/schema/2.0",
            "href": "https://example.org/nodeinfo/2.0"
        },
        {
            "rel": "http://nodeinfo.diaspora.software/ns/schema/2.1",
            "href": "https://example.org/nodeinfo/2.1"
        },
        {
            "rel": "http://nodeinfo.diaspora.software/ns/schema/2.2",
            "href": "https://example.org/nodeinfo/2.2"
        }
    ],
  "version": "2.2",
  "instance": {
    "name": "FI𝑓F fediverse",
    "description": "Welcome to the FI𝑓F fediverse server"
  },
  "software": {
    "name": "diaspora",
    "version": "0.5.0",
    "repository": "https://github.com/diaspora/diaspora",
    "homepage": "https://diasporafoundation.org/"
  },
  "protocols": ["diaspora"],
  "services": {
    "inbound": ["gnusocial"],
    "outbound": ["facebook", "twitter"]
  },
  "openRegistrations": true,
  "usage": {
    "users": {
      "total": 123,
      "activeHalfyear": 42,
      "activeMonth": 23,
      "activeWeek": 22
    },
    "localPosts": 500,
    "localComments": 1000
  },
  "metadata": {
    "chat_enabled": true
  }
}

This would reduce the numbers of needed requests and would be backwards compatible.