make bluetooth service singleton

include/widgets/controlCenter.hpp

@@ -0,0 +1,17 @@
+#pragma once
+
+#include "components/popover.hpp"
+#include "services/bluetooth.hpp"
+#include "widgets/bluetooth.hpp"
+#include "gtkmm/box.h"
+
+class ControlCenter : public Popover {
+    public:
+        ControlCenter(std::string icon, std::string name);
+    
+    private:
+        Gtk::Box container;
+
+        BluetoothWidget *bluetoothWidget = nullptr;
+        BluetoothService *bluetoothService = BluetoothService::getInstance();
+};