feat(wm): reintroduce remove-title-bar cmds

This commit reintroduces some old code from the feature/remove-titlebars
branch. This feature is very unstable and it is strongly advised that
nobody actually uses it. Wherever possible, please use the "remove
titlebar" functionality provided directly within an application.

komorebi-core/src/lib.rs

@@ -143,6 +143,8 @@ pub enum SocketMessage {
     ToggleFocusFollowsMouse(FocusFollowsMouseImplementation),
     MouseFollowsFocus(bool),
     ToggleMouseFollowsFocus,
+    RemoveTitleBar(ApplicationIdentifier, String),
+    ToggleTitleBars,
     AddSubscriber(String),
     RemoveSubscriber(String),
     NotificationSchema,