Added a simple read-only TableModel and made it accessible via GenericCore.

Basically like in this tutorial: https://doc.qt.io/qt-6/modelview.html#2-1-a-read-only-table

genericcore.h

@@ -3,8 +3,11 @@
 
 #include <QObject>
 
+class QAbstractItemModel;
 class QString;
 
+class TableModel;
+
 class GenericCore : public QObject {
   Q_OBJECT
 
@@ -18,10 +21,16 @@ class GenericCore : public QObject {
   bool isApplicationUpdateAvailable();
   void triggerApplicationUpdate();
 
+  std::shared_ptr<QAbstractItemModel> getModel() const;
+
  signals:
   void displayStatusMessage(QString message);
 
  private:
+  std::shared_ptr<TableModel> m_mainModel;
+
+  void setupModels();
+
   QString getMaintenanceToolFilePath() const;
 };