Convert javascript events to Node or Edge

[marimeireles]

I was creating some examples to scypy and noticed the events received in this case:

def paint_blue(event):
    auxNode = cyGraph.graph.nodes[int(event['data']['id'])]
    auxNode.classes += ' blue'
    
cyGraph.on('node', 'click', paint_blue)

Are a perfect Node instance. I think it'd make sense to convert this event to ipycytoscape.Node() on our backend. That'd remove the need to have this line auxNode = cyGraph.graph.nodes[int(event['data']['id'])].
This also works for Edge.