feat(wayland): migrate bar to quickshell

home/dot_config/quickshell/bar/shell.qml

@@ -0,0 +1,12 @@
+import Quickshell
+
+ShellRoot {
+    Variants {
+        model: Quickshell.screens
+
+        Bar {
+            required property var modelData
+            screen: modelData
+        }
+    }
+}