implement ifuse for Linux

- Updated CMakeLists.txt to include platform-specific source files for macOS.
- Added new icon for disk unmount button.
- Modified resources.qrc to include the new icon.
- Implemented iFuse disk unmount button and manager classes for handling iFuse operations on Linux.
- Created iFuseWidget for managing iPhone disk mounting, including UI and process handling.
- Integrated iFuse functionality into the main application, allowing users to mount and unmount iPhone disks.
- Enhanced DeviceInfoWidget and other UI components for better user experience.
- Added support for displaying mounted iFuse paths in the status bar.

src/main.cpp

@@ -1,5 +1,4 @@
 #include "mainwindow.h"
-
 #include <QApplication>
 
 int main(int argc, char *argv[])
@@ -10,7 +9,7 @@ int main(int argc, char *argv[])
     // QCoreApplication::setOrganizationDomain("iDescriptor.com");
     QCoreApplication::setApplicationName("iDescriptor");
 
-    MainWindow w;
-    w.show();
+    MainWindow *w = MainWindow::sharedInstance();
+    w->show();
     return a.exec();
 }