Feature request

It'd be nice to have an optional symfony/validator integration that would transform Symfony validation constraints to JSON schema (for tool calls / structured output) + it would also check those with validator before invoking the tool. To make all this possible I think the json schema generation needs to be decoupled from With attribute and do something similar to https://github.com/nelmio/NelmioApiDocBundle/tree/5.x/src/ModelDescriber/Annotations.

In addition to using validation constraints, it'd still be possible to use #[With], the same way as you can use #[OA\Property] with nelmio api doc bundle in case it's not possible to infer the whole schema from validation constraints alone.