Add support for 3D pdf files

[GMANJS]

3D pdf files becomes flat image files in Collaborator making it impossible to use Collaborator to review the contents.

A functionality is needed to be able to pin the 3D contents in the same way you can place comment pins with the Adobe reader.

[kataylor]

I second this. I see no online activity related to this in the last 6 years but our company would benefit greatly from this feature.