Replaces object verbs Rotate, Flip, etc with MouseDrop()

Drag towards cardinal direction = set object to that direction.
Drag again towards the current direction = flips object (if applicable).

Affected objs: Doppler arrays,  disposals pipes, transit tubes, chairs, windows, windoor assemblies, emitters, PA parts, infrared assemblies.
Normal atmos pipes are NOT affected by this change at the moment due to ongoing code changes. I'll PR those separately once possible.

This kills 17 object verbs.

Fixes #4578
Fixes #5675