[Feature request] Drag drop support

[seadeep42]

The viewer currently does not seem to support dragging an IFC file to the viewer region to open it.
It's just a better UX but helps alleviate the problem of trying to navigate through folders.

P.S: I'm pleasantly surprised it supports adding multiple IFC files at once

[agviegas]

Hey! The main goal of the example is to provide a "hello-world" sample of how to use the library. We want to make something similar to the three.js editor to show all capabilities of the library in one viewer 🙂 Maybe that would be the place to implement such feature?

[tonyk24]

Hello, I started working on this. Is it still a good idea to have it in the example? Or should it be in an "editor".

[agviegas]

Hey @tonyk24 I think this would be a fantastic addition to the editor. We'll start the repository these days. If you could create it there then, it would be super great. Thanks a lot for this!