feat: add multi-monitor support

main.tsx

@@ -0,0 +1,25 @@
+import { For, This, createBinding } from "ags";
+import app from "ags/gtk4/app";
+import { Bar } from "./widgets/bar";
+import { Launcher } from "./widgets/launcher";
+import { Notifications } from "./widgets/notifications";
+import { ControlCenter } from "./widgets/control-center";
+import { WallpaperManager } from "./widgets/wallpaper-manager";
+
+export const Main = () => {
+  const monitors = createBinding(app, "monitors");
+
+  return (
+    <For each={monitors}>
+      {(monitor) => (
+        <This this={app}>
+          <Bar gdkmonitor={monitor} />
+          <Launcher gdkmonitor={monitor} />
+          <Notifications gdkmonitor={monitor} />
+          <ControlCenter gdkmonitor={monitor} />
+          <WallpaperManager gdkmonitor={monitor} />
+        </This>
+      )}
+    </For>
+  );
+};