Split panda_sdl and panda_qt

src/panda_qt/main.cpp

@@ -0,0 +1,12 @@
+#include <QApplication>
+#include <QtWidgets>
+
+int main(int argc, char *argv[]) {
+    QApplication app(argc, argv);
+    QWidget window;
+    
+    window.resize(320, 240);
+    window.show();
+    window.setWindowTitle("Alber");
+    return app.exec();
+}