OpenVR Manifest, Auto-Registration

This release adds an OpenVR manifest and some registration helpers, so that you can run this overlay automatically when SteamVR opens.

To register it with SteamVR (or any other OpenVR runtime), run register.bat once extracted. SteamVR should automatically pick it up. Enable auto-launching by going to SteamVR Settings > Startup / Shutdown > Startup Overlays and choose "Where Is Forward?"

If you move the location of the app, you will need to re-register, so you might want to keep it in one place.