Adding a shortcut for the « open image from clipboard » function

I use most of the times the screenshots in other applications and do not need to open the image with the Greenshot image editor, but sometimes I just want to store the captured image in a part of my screen. Having a keyboard shortcut to do it when I need it would make it much more convenient to me. The shortcut could be activated or deactivated from the option menu for those who don’t need it.