Python: Ability to lock graph node and graph segment

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In some cases, we need to lock graph node or graph segment from being edited where editing means: attribute changes or geometrical changes

ce.setLocked( graphNodeObj, ATTRIBUTE|GEOMETRY)

ce.setLocked( list_of_graph_nodes, ATTRIBUTE|GEOMETRY)

ce.setLocked( list_of_graph_segments, ATTRIBUTE|GEOMETRY)

ce.setLocked( list_of_graph_nodes_and_graph_segments, ATTRIBUTE|GEOMETRY)

ce.setUnlocked( graphNodeObj, ATTRIBUTE|GEOMETRY)

ce.setUnlocked( list_of_graph_nodes, ATTRIBUTE|GEOMETRY)

ce.setUnlocked( list_of_graph_segments, ATTRIBUTE|GEOMETRY)

ce.setUnlocked( list_of_graph_nodes_and_graph_segments, ATTRIBUTE|GEOMETRY)‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍