refactor DeviceInfoWidget

- Adds battery widget and real-time battery monitoring
- Creates custom battery widget component for visual battery status display
- Integrates comprehensive battery information including charging state,
current level, connection type (USB/USB-C), and power consumption
- Implements automatic battery status updates every 30 seconds to keep
information current during device connection
- Refactors battery data retrieval into separate service function for
better code organization and reusability
- Enhances device info header with charging status, power consumption,
and connection type indicators alongside visual battery widget

src/deviceinfowidget.h

@@ -1,6 +1,9 @@
 #ifndef DEVICEINFOWIDGET_H
 #define DEVICEINFOWIDGET_H
+#include "batterywidget.h"
 #include "iDescriptor.h"
+#include <QLabel>
+#include <QTimer>
 #include <QWidget>
 
 class DeviceInfoWidget : public QWidget
@@ -15,7 +18,13 @@ private slots:
 
 private:
     QPixmap getDeviceIcon(const std::string &productType);
-    iDescriptorDevice *device;
+    iDescriptorDevice *m_device;
+    QTimer *m_updateTimer;
+    void updateBatteryInfo();
+    QLabel *m_chargingStatusLabel;
+    QLabel *m_chargingWattsLabel;
+    QLabel *m_cableTypeLabel;
+    BatteryWidget *m_batteryWidget;
 };
 
 #endif // DEVICEINFOWIDGET_H