Add keybind to enable drag

[MrNavaStar]

It would be nice to be able to set a key bind to temporarily enable dragging (such as the super key). I would personally use this over autodrag.

[KZDKM]

I havent tested, but have you tried disabling autodrag and use your drag keybind as normal?

[MrNavaStar]

I have, it does not seem to work

[deezhizyu]

I implemented that in #165

[logrusx]

I implemented that in #165

That would be very useful, I'm dying to get home and test it.