add clock to bar

include/bar.hpp

@@ -0,0 +1,19 @@
+#pragma once
+
+#include <gtkmm.h>
+#include <gtk4-layer-shell/gtk4-layer-shell.h>
+
+#include "widgets/clock.hpp"
+
+
+class Bar : public Gtk::Window {
+public:
+    Bar();
+
+protected:
+    Clock clock;
+    Gtk::CenterBox main_box{};
+
+    void setup_ui();
+    void load_css();
+};