Add move window to cardinal point shortcuts
This change adds functions & optional user hotkeys to move the active window directly into one of the cardinal directions on the screen. (NW, N, NE, E, SE, S, SW, W)
This combined with other keyboard-based window navigation features like move to center, move to next monitor, maximize / minimize, etc gives the user powerful built-in options to control their windows entirely with the keyboard.
This is anticipated to be valuable to many people who prefer to rely on keyboard-based interaction rather than mouse-based in cases such as speed, familiarity, preference & accessiblity.