feat: 创建UI和实现init()函数，文件内容值到QTableView和QStandardItemModel里面

QtQStandardItemModelEx/main.cpp

@@ -0,0 +1,11 @@
+#include "ExQStandardItemModel.h"
+#include <QApplication>
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+    ExQStandardItemModel w;
+    w.show();
+
+    return a.exec();
+}