Imported existing sources

sketchlib/container/oval.cpp

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