message: Add Tilt Brush
  Google haven't out and out said it's dead, but it's been strongly implied by two sources:
  [1] states that
  > Please note that it is not an actively developed product, and no pull requests will be accepted
  [2]
  The repo is up but archived.
diff: [
  + {
  + "dateClose": "2022-01-26",
  + "dateOpen": "2016-04-05",
  + "description": "Tilt Brush was a room-scale 3D-painting virtual-reality application available from Google, originally developed by Skillman & Hackett. .",
  + "link": "https://www.tiltbrush.com/",
  + "name": "Tilt Brush",
  + "type": "app"
  + },
  {
  "dateClose": "2022-01-05",
  "dateOpen": "2015-05-28",
  