feat(wm): add noop cross-monitor-move-behaviour

This commit adds a new "NoOp" MoveBehaviour for users who don't want any
moves to happen across monitor boundaries. The
toggle-cross-monitor-move-behaviour will only toggle between Swap and
Insert, and will do nothing if NoOp is the selected MoveBehaviour.

resolve #667

komorebi-core/src/lib.rs

@@ -283,6 +283,8 @@ pub enum MoveBehaviour {
     Swap,
     /// Insert the window container into the focused workspace on the adjacent monitor
     Insert,
+    /// Do nothing if trying to move a window container in the direction of an adjacent monitor
+    NoOp,
 }
 
 #[derive(