Create drag-and-drop API
We currently don't have a way to reliably perform drag and drop operations for users who cannot use a mouse. The last time I tried to accomplish this via synthesized mouse events in Orca, the result often failed and I gave up.
Given that we're now considering how to solve things like Mouse Review, and synthesized mouse events for Wayland, I'd like to see if we can also solve the drag-and-drop problem for Orca users with a first-class, hack-free API.
cc @carlosg (I'm assuming Mutter will be very much needed/involved in whatever we come up with.)