Add Windows+Volume Down as a screenshot shortcut
@hadess
Submitted by Bastien Nocera Link to original bug (#764639)
Description
As mentioned in: https://blogs.windows.com/devices/2015/11/16/how-to-take-a-screenshot-on-your-windows-10-surface-device/
Implementing the Power+Volume Down would be harder though...
Version: 3.20.x