Returning (validation) errors as problem details JSON (RFC7807)?

[okaestne]

First of all: thank you for this nice quart extension!

I was using flask and connexion before and now would like to use quart with this extension for an async REST API.
Similar to connextion, I would like to have responses formatted as defined by RFC7807 (problem details), which I think is kind of a "standard" for REST APIs.
Therefore my question: Is it somehow possible to modify the responses of validation errors, which are right now sometimes HTML formatted (when using wrong content-type) or sometimes JSON objects with a message and error property?
Maybe it would be even better, if the latter would be even follow the RFC by default?

Thanks in advance