message: Add Google Play Music to graveyard.json
diff: [
  + {
  + "dateClose": "2020-12-31",
  + "dateOpen": "2011-11-16",
  + "description": "Google Play Music was a music and podcast streaming service, and online music locker.",
  + "link": "https://youtube.googleblog.com/2020/05/youtube-music-transfer-google-play-music-library.html",
  + "name": "Google Play Music",
  + "type": "service"
  + },
  {
  "dateClose": "2020-05-12",
  "dateOpen": "2019-06-10",
  