simplify things by moving popups into a new layer

modules/Services/WidgetTracker.qml

@@ -0,0 +1,15 @@
+pragma Singleton
+import Quickshell
+
+Singleton {
+    id: root
+    property string current: ""
+    property ShellScreen screen: null
+    function toggle(name, scr) {
+        current = (current === name && screen === scr) ? "" : name;
+        screen = scr;
+    }
+    function close() {
+        current = "";
+    }
+}