implement ssh connection

- Updated AppWidget to utilize QStackedWidget for better UI management, including loading and error states.
- Removed unnecessary includes and improved the organization of private methods in AppWidget.
- Enhanced DevDiskImagesWidget UI by adding a settings button and improving layout with shadows.
- Refactored DeviceInfoWidget to use QGroupBox for better visual grouping of device information.
- Replaced QProcess with libssh for SSH connections in JailbrokenWidget, improving reliability and performance.
- Added a timer to check SSH data and handle input/output more effectively.
- Improved SettingsManager to manage settings dialog display and lifecycle.
- Refactored SettingsWidget to be a QDialog for better user experience and removed unnecessary buttons.
- Adjusted layout margins across various widgets for a cleaner UI.

src/devdiskimageswidget.h

@@ -2,19 +2,18 @@
 #define DEVDISKIMAGESWIDGET_H
 
 #include "iDescriptor.h"
+#include <QComboBox>
+#include <QLabel>
+#include <QListWidget>
 #include <QMap>
+#include <QNetworkReply>
+#include <QPair>
+#include <QProgressBar>
+#include <QPushButton>
+#include <QStackedWidget>
+#include <QStringList>
 #include <QWidget>
 
-class QNetworkAccessManager;
-class QNetworkReply;
-class QListWidget;
-class QStackedWidget;
-class QLabel;
-class QLineEdit;
-class QPushButton;
-class QProgressBar;
-class QComboBox;
-
 class DevDiskImagesWidget : public QWidget
 {
     Q_OBJECT
@@ -27,7 +26,6 @@ private slots:
     void onDownloadButtonClicked();
     void onDownloadProgress(qint64 bytesReceived, qint64 bytesTotal);
     void onFileDownloadFinished();
-    void changeDownloadDirectory();
     void updateDeviceList();
     void onMountButtonClicked();
     void onImageListFetched(bool success,
@@ -62,7 +60,6 @@ private:
     QLabel *m_statusLabel;
     QLabel *m_initialStatusLabel;
     QWidget *m_errorWidget;
-    QLineEdit *m_downloadPathEdit;
     QComboBox *m_deviceComboBox;
     QPushButton *m_mountButton;
     QPushButton *m_check_mountedButton;