new_editor: support between-row hierarchy drag drop

new_editor/app/Scene/EditorSceneRuntime.cpp

@@ -463,6 +463,32 @@ bool EditorSceneRuntime::ReparentGameObject(
     return reparented;
 }
 
+bool EditorSceneRuntime::MoveGameObjectBefore(
+    std::string_view itemId,
+    std::string_view targetItemId) {
+    ResetTransformEditHistory();
+    const bool moved =
+        MoveEditorGameObjectBefore(itemId, targetItemId);
+    if (moved) {
+        IncrementInspectorRevision();
+    }
+    RefreshScene();
+    return moved;
+}
+
+bool EditorSceneRuntime::MoveGameObjectAfter(
+    std::string_view itemId,
+    std::string_view targetItemId) {
+    ResetTransformEditHistory();
+    const bool moved =
+        MoveEditorGameObjectAfter(itemId, targetItemId);
+    if (moved) {
+        IncrementInspectorRevision();
+    }
+    RefreshScene();
+    return moved;
+}
+
 bool EditorSceneRuntime::MoveGameObjectToRoot(std::string_view itemId) {
     ResetTransformEditHistory();
     const bool moved = MoveEditorGameObjectToRoot(itemId);