temp fix: 编译不通过的问题

为PaintingUtil中的transformToPainting函数临时添加了返回值，需要在后续修改

ArchitectureColoredPainting/src/Editor/util/PaintingUtil.cpp

@@ -27,6 +27,8 @@ Painting PaintingUtil::transfromToPainting(QString jsonFilePath) {
     ElementManager *elementManager = new ElementManager(jsonObj, Renderer::ElementRenderer::instance());
     LayerManager* layerManager = new LayerManager(jsonObj, elementManager);
     traverseLayTree(layerManager->getRoot(), transform, flip, painting);
+    // FIXME: 为了编译通过添加的返回
+    return painting;
 }
 
 void PaintingUtil::traverseLayTree(LayerWrapper* nowLayer, QTransform transform, bvec2 flip, Painting& painting) {