Allow control type specific custom classes

[sdirix]

Describe the feature
At the moment it's not possible to define custom classes per control type. They can only be defined for all controls or via the ui schema for a single control.

Describe the solution you'd like
It would be nice when custom classes could be defined per control type, i.e. number, integer, string, array etc.

Describe for which setup you like to have the improvement
Framework: [Vue]
RendererSet: [Vanilla]

Additional context
Could also be implemented for the React Vanilla renderer set

[davewwww]

@sdirix is this related to issue #2239

[sdirix]

Yes, that's basically the same issue