bar can now toggle bluetooth power and discovery

include/widgets/bluetooth.hpp

@@ -0,0 +1,31 @@
+#pragma once
+
+#include <gtkmm/box.h>
+
+#include "components/popover.hpp"
+
+#include "gtkmm/button.h"
+
+class BluetoothWidget : public Popover {
+  public:
+    BluetoothWidget(std::string icon, std::string title);
+
+    void setPowerState(bool state);
+    void setIsDiscovering(bool state);
+
+    sigc::signal<void(bool)> powerStateChangedSignal;
+    sigc::signal<void(bool)> isDiscoveringChangedSignal;
+    
+    void update();
+  private:
+    bool isPowered = false;
+    bool isDiscovering = false;
+
+    Gtk::Box container;
+    Gtk::Box statusArea;
+
+    Gtk::Box *deviceList = nullptr;
+
+    Gtk::Button *scanButton   = nullptr;
+    Gtk::Button *toggleButton = nullptr;
+};