feat: add tabbed container layout mode with tab bar UI

fix: tab bars no longer shown in overview.  Tab bars show name of app with pipe and then title of the app

src/wm/monitor.ts

@@ -1,7 +1,6 @@
 import {WindowWrapper} from "./window.js";
 import {Rect} from "../utils/rect.js";
 import {Logger} from "../utils/logger.js";
-import Meta from "gi://Meta";
 
 import WindowContainer from "./container.js";
 
@@ -73,6 +72,18 @@ export default class Monitor {
         this._workspaces.push(new WindowContainer(this._workArea));
     }
 
+    hideTabBars(): void {
+        for (const container of this._workspaces) {
+            container.hideTabBar();
+        }
+    }
+
+    showTabBars(): void {
+        for (const container of this._workspaces) {
+            container.showTabBar();
+        }
+    }
+
     itemDragged(item: WindowWrapper, x: number, y: number): void {
         this._workspaces[item.getWorkspace()].itemDragged(item, x, y);
     }