[FormBuilderCheckboxGroup FormBuilderRadioGroup]: add decorators to items itemDecorators to be be able to box the choices

[freemansoft]

Is there an existing issue for this?

• I have searched the existing issues

Package/Plugin version

9.1.0

What you'd like to happen

We want to make radio or check box cards with images and text surrounded by a box.

We actually want the ability to also put the checkbox / radio at top, middle or bottom when next to a stack of widgets.  Currently can only be centered on the left or right.

Alternatives you've considered

Tried subclassing but the super call in `FormBuilderCheckboxGroup` and `FormBuilderRadioGroup` make it impossible to intercept or replace the `GroupedCheckBox` or `GroupedRadioButtion` invocations with a subclass.

The alternative is to create a custom component but that seems like for a different purpose

Aditional information