Added ags

TODO copy ags config

roles/ags/files/widget/bar/buttons/Messages.ts

@@ -0,0 +1,16 @@
+import icons from "lib/icons"
+import PanelButton from "../PanelButton"
+import options from "options"
+
+const n = await Service.import("notifications")
+const notifs = n.bind("notifications")
+const action = options.bar.messages.action.bind()
+
+export default () => PanelButton({
+    class_name: "messages",
+    on_clicked: action,
+    visible: notifs.as(n => n.length > 0),
+    child: Widget.Box([
+        Widget.Icon(icons.notifications.message),
+    ]),
+})