Move logic to task

Signed-off-by: TheKodeToad <TheKodeToad@proton.me>

launcher/ui/dialogs/ExportMrPackDialog.h

@@ -36,10 +36,9 @@ class ExportMrPackDialog : public QDialog {
     void done(int result) override;
 
    private:
-    InstancePtr instance;
+    const InstancePtr instance;
     Ui::ExportMrPackDialog* ui;
     PackIgnoreProxy* proxy;
 
     void runExport();
-    QByteArray generateIndex();
 };