docs integration feature

problem: when someone screenshares a document, it's difficult / annoying for people to get access to it solution: google meet. those in the meeting who have the permission to access the document should be able to access and edit the document in the screenshare window, rendered through an iframe with all of the existing features. people who don't have this access just receive the view only version of the document, regardless of the permissions - with a screenshare they are implicitly given permission to view the document during the presentation. eventually we can host iframes of all these different websites with this technology