chore: Swap webvr to webxr polyfill packages

[kevleyski]

Description

Fixes #216 (WebXR support)

Specific Changes proposed

For devices that support WebXR use that Add iOS device orientation permission check on entering 360 (note ESLint workaround as this is iOS Safari specfic) Fall back to original WebVR polyfill if navigator.xr not available after initialising WebXR polyfill

Requirements Checklist

• [X] Feature implemented / Bug fixed
• [x] If necessary, more likely in a feature request than a bug fix
  • [x] Unit Tests updated or fixed
  • [X] Docs/guides updated
• [ ] Reviewed by Two Core Contributors

[kevleyski]

Had planned to add thinks like thumb stick controls scrubbing rate maybe and throw a TV not your AR wall - but then those can be a separate issue items

This is more a quick fix to get the player playing immersive VR

[kevleyski]

Not entirely sure where package-lock.json came from (anyhow my local merge was ok without conflicts)

[mister-ben]

It's a shame this stalled, would be great to get all this work in. Is it just package-lock that needs to be fixed up?

[mister-ben]

I've a branch here with these changes merged onto main, https://github.com/mister-ben/videojs-vr/tree/from-metacdn