Function showCustomFormUI

Returns {
    customUI: {
        code: string;
        codeIds: string[];
        codeValues: string[];
        optionElements: Globals.modules.main.customFormUIElement[];
        optionPropertyIds: string[];
        optionPropertyValues: string[];
    };
    form: ModalFormData
    | ActionFormData
    | MessageFormData;
    formResponse: ModalFormResponse | ActionFormResponse | MessageFormResponse;
    optionElements: Globals.modules.main.customFormUIElement[];
}