* Rename docs/ios-client.md to docs/apple-client.md. Add instructions
  for macOS; those are copied from the /apple endpoint and slightly
  modified. Fix doc links in the README.
* Move infoboxes for /apple and /windows under the "Goal" section to the
  top. Those should be seen by users first as they contain *their*
  specific headscale URL.
* Swap order of macOS and iOS to move "Profiles" further down.
* Remove apple configuration profiles
* Remove Tailscale versions hints
* Mention /apple and /windows in the README along with their docs

See: #2096