implement statusballoon, refactor export logic and add new icons

src/exportmanagerthread.h

@@ -0,0 +1,40 @@
+#ifndef EXPORTMANAGERTHREAD_H
+#define EXPORTMANAGERTHREAD_H
+#include "iDescriptor.h"
+#include "servicemanager.h"
+#include <QDebug>
+#include <QDir>
+#include <QThread>
+
+class ExportManager;
+
+using namespace IdeviceFFI;
+
+class ExportManagerThread : public QObject
+{
+    Q_OBJECT
+public:
+    ExportManagerThread(QObject *parent = nullptr) : QObject(parent) {}
+
+    void executeExportJob(ExportJob *job);
+    ExportResult exportSingleItem(iDescriptorDevice *device,
+                                  const ExportItem &item,
+                                  const QString &destinationDir,
+                                  std::optional<AfcClientHandle *> altAfc,
+                                  std::atomic<bool> &cancelRequested,
+                                  const QUuid &statusBalloonProcessId);
+
+private:
+    void executeExportJobInternal(ExportJob *job);
+    QString generateUniqueOutputPath(const QString &basePath);
+signals:
+    void exportProgress(const QUuid &jobId, int currentItem, int totalItems,
+                        const QString &currentFileName);
+    void fileTransferProgress(const QUuid &jobId, int fileIndex,
+                              const QString &currentFile,
+                              qint64 bytesTransferred, qint64 totalFileSize);
+    void itemExported(const QUuid &jobId, const ExportResult &result);
+    void exportFinished(const QUuid &jobId, const ExportJobSummary &summary);
+    void exportCancelled(const QUuid &jobId);
+};
+#endif // EXPORTMANAGERTHREAD_H