feat(settings): add grouped configuration hub, languages and tray controls

shell/ferese-shell/src/display_mode.rs

@@ -415,7 +415,9 @@ impl FereseShell {
             .is_some_and(|modal| modal.focus_visible);
         let pending = model.pending();
         let mut header = row![
-            self.render.text("Display mode").size(17),
+            self.render
+                .text(ferese_config::tr!("Display mode"))
+                .size(17),
             cosmic::iced::widget::Space::new().width(Length::Fill)
         ]
         .align_y(cosmic::iced::Alignment::Center)