Remove Google Poly
Google Poly is now defunct and has been for quite sometime. (https://killedbygoogle.com/). With our modern scripting interface we can add support for alternatives without needing to have this in the main codebase.
This was tested, but I found that dragging zip files into both the latest release and this build did not work. Dragging urls did not work on either either.
This could be due to my desktop environment, KDE Plasma, as that has had weird issues in the past.
To the best of my testing ability this did not break anything that wasn't already broken?
This is my first C++ related pull so I would like some feedback if I've done something silly.
Yeah, this is a good point. If someone ever wanted to support Google Poly's successor(?), they should just have it be a plugin. Not to mention, the scripting API doesn't really make things easier without any UI to make it accessible.