add switch node

doric-Qt/example/doric/shader/DoricSwitchNode.h

@@ -0,0 +1,17 @@
+#ifndef DORICSWITCHNODE_H
+#define DORICSWITCHNODE_H
+
+#include "DoricExport.h"
+
+#include "DoricViewNode.h"
+
+class DORIC_EXPORT DoricSwitchNode : public DoricViewNode {
+public:
+  using DoricViewNode::DoricViewNode;
+
+  QQuickItem *build() override;
+
+  virtual void blend(QQuickItem *view, QString name, QJsonValue prop) override;
+};
+
+#endif // DORICSWITCHNODE_H