Add keybinding to move between master and stack

[avahe-kellenberger]

We want to be able to easily move between a master window and a window in the stack.

Keep in mind there can be 0-n master or stack windows.

[avahe-kellenberger]

Requested by @PMunch

[Dou2ble]

i am very late but there is a workaround that i have found:

nimdow --move-window-to-scratchpad
nimdow --pop-scratchpad
nimdow --toggle-floating
nimdow --move-window-next

EDIT:
when using it the commands need to be on a singe line seperated with && or ;