Symfony Form Component Standalone Form Type Extension

I have a project using some components from Symfony. Namely Twig, Doctrine, and Form.

I would like to modify all form field types to be able to take a new 'suffix' argument when they are created. It seems like this is usually simple in the full Symfony stack and could be done by extending the existing form type. However I'm not sure how to get the form component to load my custom extension when using the Form Component standalone.

Any help would be great, thank you!