Add initial project structure with essential files including .gitignore, application resources, and various model and view components for the application. Implemented asynchronous parsing support and database structure checks.

model/pageinfo.h

@@ -0,0 +1,14 @@
+#ifndef PAGEINFO_H
+#define PAGEINFO_H
+
+#include <QRectF>
+
+// Структура для хранения информации о странице
+struct PageInfo {
+    QRectF pageRect;
+    int pageNumber;
+    int totalPages;
+    bool isFirstPage;
+};
+
+#endif // PAGEINFO_H