Set up the hamburger menu

kifu/gtk/src/ui/layout.rs

@@ -16,6 +16,17 @@ impl Default for LayoutPrivate {
             .show_start_title_buttons(true)
             .show_end_title_buttons(true)
             .build();
+
+        let app_menu = gio::Menu::new();
+        app_menu.append(Some("Configuration"), Some("show-config"));
+
+        let hamburger = gtk::MenuButton::builder()
+            .icon_name("open-menu-symbolic")
+            .build();
+        hamburger.set_menu_model(Some(&app_menu));
+
+        header.pack_end(&hamburger);
+
         let content = adw::StatusPage::builder().title("Nothing here").build();
 
         Self {