gui: add basic gui code.

Struct/InfoPack.hpp

@@ -0,0 +1,25 @@
+#ifndef INFO_PACK_HPP
+#define INFO_PACK_HPP
+
+#include <QByteArray>
+#include <QDataStream>
+#include <QDebug>
+
+template <typename T> QByteArray infoPack(const T& obj)
+{
+    QByteArray byteArray;
+    QDataStream stream(&byteArray, QIODevice::ReadWrite);
+    obj.serialize(stream);
+    stream.device()->seek(0);
+    return byteArray;
+}
+
+template <typename T> T infoUnpack(const QByteArray& byteArray)
+{
+    T obj;
+    QDataStream stream(byteArray);
+    obj.deserialize(stream);
+    return obj;
+}
+
+#endif   // INFO_PACK_HPP