implement WelcomeWidget , fix bugs , add tutorial videos

- Introduced WelcomeWidget to display a welcome message when no devices are connected, replacing the previous "No devices detected" page in MainWindow.
- Replaced ClickableLabel with ZLabel in ifusewidget.h for improved UI consistency.
- Removed PCFileExplorerWidget and its associated header file, streamlining the codebase.
- Updated PhotoImportDialog to improve server start process and UI elements, including renaming buttons and adjusting labels.
- Modified RealtimeScreenWidget to increase delay before initializing screenshot service for better reliability.
- Enhanced SimpleHttpServer to include a method for retrieving the JSON file name.
- Updated ToolboxWidget to integrate WirelessPhotoImportWidget, allowing for wireless photo imports.
- Added WirelessPhotoImportWidget to facilitate the selection and import of photos, including a tutorial video feature.
- Created a new WelcomeWidget to guide users on connecting their iOS devices.

src/deviceinfowidget.cpp

@@ -233,15 +233,14 @@ DeviceInfoWidget::DeviceInfoWidget(iDescriptorDevice *device, QWidget *parent)
     infoItems.append(
         {"Hardware Model:", createValueLabel(QString::fromStdString(
                                 device->deviceInfo.hardwareModel))});
+    infoItems.append({"Region:", createValueLabel(QString::fromStdString(
+                                     device->deviceInfo.region))});
     infoItems.append(
         {"Hardware Platform:", createValueLabel(QString::fromStdString(
                                    device->deviceInfo.hardwarePlatform))});
     infoItems.append(
-        {"Ethernet Address:", createValueLabel(QString::fromStdString(
-                                  device->deviceInfo.ethernetAddress))});
-    infoItems.append(
-        {"Bluetooth Address:", createValueLabel(QString::fromStdString(
-                                   device->deviceInfo.bluetoothAddress))});
+        {"Battery Cycle:", createValueLabel(QString::number(
+                               m_device->deviceInfo.batteryInfo.cycleCount))});
     infoItems.append(
         {"Firmware Version:", createValueLabel(QString::fromStdString(
                                   device->deviceInfo.firmwareVersion))});