Imported existing sources

sketchlib/container/shapegroup.cpp

@@ -0,0 +1,11 @@
+#include "shapegroup.h"
+
+ShapeGroup::ShapeGroup(QObject *parent) :
+    Group(parent)
+{
+}
+
+bool ShapeGroup::parseProperty(const QString &key, const QJsonValue &value)
+{
+    return Group::parseProperty(key, value);
+}