feat(wm): add resize-delta cmd

This commit adds a command to set the resize delta used under the hood
by the resize-edge and resize-axis commands. The resize delta defaults
to 50 pixels as was hard-coded previously.

komorebi-core/src/lib.rs

@@ -85,6 +85,7 @@ pub enum SocketMessage {
     WatchConfiguration(bool),
     InvisibleBorders(Rect),
     WorkAreaOffset(Rect),
+    ResizeDelta(i32),
     WorkspaceRule(ApplicationIdentifier, String, usize, usize),
     FloatRule(ApplicationIdentifier, String),
     ManageRule(ApplicationIdentifier, String),