Better ordering of parameters

[jkiviluo]

If I want to edit parameters from the dependent classes, I typically choose the full n-d class and not a 0-d class. Conversely, when I want to edit parameters of the 0-d class, I choose that and I would expect to see them first. However, due to alphabetical ordering of classes, I might see parameters of one of the dependent classes first and that's not nice - I need to go scrolling which I despise.

So, I think it would be better if all the parameter_definitions and parameter_values of the 0-d class were shown first and only then, in alphabetical class order, the parameters from the dependent classes.

There are more changes to ordering in the https://github.com/spine-tools/Spine-Toolbox/issues/2492, but this should something quick and simple, right?