Add ManipulationObjectPtr loadManipulationObject(const char* xmlFile)

VirtualRobot/XML/ObjectIO.h

@@ -65,6 +65,10 @@ namespace VirtualRobot
             @return Returns an empty pointer, when file access failed.
         */
         static ManipulationObjectPtr loadManipulationObject(const std::string& xmlFile);
+        static ManipulationObjectPtr loadManipulationObject(const char* xmlFile)
+        {
+            return loadManipulationObject(std::string{xmlFile});
+        }
         static ManipulationObjectPtr loadManipulationObject(const std::filesystem::path& xmlFile)
         {
             return loadManipulationObject(xmlFile.string());