add shortcuts to move selected tabs to backward/forward workspace

[fzhnf]

Zen Browser has a built-in shortcut to move backward and forward in the workspace using CTRL+ALT+Q and CTRL+ALT+E. In my experience with Qtile, I love the behavior of also bringing the currently selected app to the place I'll be going. I would like to have the same experience, using zen's shortcut, but with Shift addition, it will move to the forward/backward workspace along with the currently selected tabs.