Switch from QMake to CMake with buildcore

src/main.cpp

@@ -0,0 +1,18 @@
+/*
+ * Copyright 2021 gary@drinkingtea.net
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <QApplication>
+
+#include "mainwindow.hpp"
+
+int main(int argc, char *argv[]) {
+	QApplication a(argc, argv);
+	MainWindow w;
+	w.show();
+	return a.exec();
+}