Allow adding class to shapes

I would like to be able to assign specific behaviour to shapes. For example making specific shapes editbale. I know there's an editable field in shapes[] but that is a bit clunky (the user has to select the shape and then move it which doesn't always work very well).

I would like to be able assign a class name to shapes such that I can set specific css properties per shape. Is there a reason why a class/id can't be assigned to shapes? Could this be something that could be added?

Comienza rastreando cómo se renderiza shapes[] y cómo el campo editable existente afecta a la interacción con las formas. Define el comportamiento previsto de class/id y el ámbito de CSS para cada forma; después, verifica que el estilo específico de cada forma y la edición funcionen sin romper el comportamiento existente de las formas.