feat: Introduce Device Sidebar Widget and Settings Management

- Removed TabWidget
- Added DeviceSidebarWidget and DeviceSidebarItem classes for managing device navigation in a sidebar format.
- Removed the obsolete DeviceTabWidget class and its associated files.
- Updated MainWindow to integrate DeviceManagerWidget for device management.
- Implemented SettingsManager and SettingsWidget for user-configurable settings.
- Enhanced the main application to support settings loading and saving.
- Updated UI to accommodate new settings and device management features.

src/main.cpp

@@ -5,6 +5,11 @@
 int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);
+
+    QCoreApplication::setOrganizationName("iDescriptor");
+    // QCoreApplication::setOrganizationDomain("iDescriptor.com");
+    QCoreApplication::setApplicationName("iDescriptor");
+
     MainWindow w;
     w.show();
     return a.exec();