Extend form field types by hook (friendly captcha field)

How To
1

Hi there,

i want to extend the form element by another type of input – in my case a friendly captcha field since the other captcha solutions aren’t compatible with current GDPR laws.

I was looking for a hook in bricks/includes/elements/form.php but currently the field types are hard-coded in set_controls() -> $this->controls['fields']['fields']['options'].

According to this, in my current client’s case it’s no option to use any plugins to achieve this.
Since i won’t patch any core files – is there any option to extend the form field types?

Thanks in advance!