Support VR using WebVR

[birme]

Implement WebVR in our web player. Example implementation can be found here: https://eyevinn-vr-player.herokuapp.com/

https://eyevinntechnology.medium.com/html5-video-player-for-live-360-video-streaming-6eecd55f8b6d

and https://aframe.io

[LucasMaupin]

Closing this as the WebVR API has been deprecated by browsers in favor of WebXR, and there has been no activity on this issue in over 3 years. If there is renewed interest in WebXR support, please open a new issue. Thank you!