Support for 3D videos

[Julmik647]

Checklist

• I made sure that there are no existing issues - open or closed - which I could contribute my information to.
• I have read the FAQ and my problem isn't listed.
• I'm aware that this is a request for NewPipe itself and that requests for adding a new service need to be made at NewPipeExtractor.
• I have taken the time to fill in all the required details. I understand that the feature request will be dismissed otherwise.
• This issue contains only one feature request.
• I have read and understood the contribution guidelines.

Feature description

Addd support for 3D videos like this one. Currently you can only watch it side-by-side. There should be 3 options for watching 3D videos:

• 2D
• anaglyph 3D
• side-by-side 3D (for VR headsets)

Why do you want this feature?

This feature will allow to watch 3D videos in NewPipe app with anaglyph 3D glasses and also to watch them in 2D.

Additional information

YouTube supports 2D and anaglyph 3D. For side-by-side you can make it in same way as it is now in NewPipe.