Integrate ALVR Server with PhoneVR

[ShootingKing-AM]

• ALVR: https://github.com/alvr-org/ALVR

• [x] Separate vrActivity_Cardboard

• [x] Should be able to switch back and forth in APP, DayDream-PVR Driver or Cardboard-ALVR (default)

• [x] Disable settings when Cardboard-ALVR is selected

• Intended Benefits

  • Supports Linux, MacOS server (to the extent possible) -> Android Mobile (partly #51, partly #100)
  • Hardware rendering/encoding on server, along with improved latency, fixes #54
  • GUI Interface with some easy user controls, stats on Dashboard, wizard based Installation (.msi/.exe/.AppImage) Fixes #87
  • Uses cardboard API #71 and easy switch to much robust GoogleVR API
  • Fixes #90
  • GUI helper for Adding Firewall rules for server, fixes #75
  • Flexible Preset, can now change Cardboard viewer with inApp QR Scanning fixes #86
  • If ALVR Server is used, no need to "start android app before starting SteamVR" limitation, Fixes #67

[ShootingKing-AM]

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