Description
I work a lot with Symfony Forms and it's awesome, but sometimes I need to normalize my Symfony Form Errors in a good way, so I can encode them in some kind of output. So I always end up copy/pasting the FormErrorNormalizer in the FOS Rest.

There's a good case for including this normalizer as part of the form component, since it's basically a normalizer made for a class that is only present in this package. That way, we don't have to require an extra package or copy paste code from somewhere else.

So, what about a Compiler pass for the form component that registers the normalizer when serializer is active in a project? Maybe we could even have two flavors, one just with the serializer dependency, and another with translation support.

Any comments?