FormBuilderTypeAhead: Is there a way to allow a value not in the drop down list?

[lidholm]

Is there an existing issue for this?

• I have searched the existing issues

Package/Plugin version

11.0.0

What you'd like to happen

I would like to have a field where the user can either select from a list of options or to type in their own option in the text field. Does that already exist, either with FormBuilderTypeAhead or FormBuilderSearchableDropdown or some other field?
If no, do you have a suggestion for how to accomplish it. I'm happy to open a PR for either adding a new field or an option for an existing field

Alternatives you've considered

No response

Aditional information

No response