fix: public cbor/json codec module

[mosure]

Description

follow-up to #5792

configuring a request_response behavior with generic codec does not allow for setting request/response size limits.

e.g. the following fails to compile since request_response::cbor::codec is private:

let non_default_codec = request_response::cbor::codec::Codec::<CustomRequest, CustomLargeResponse>::default()
    .set_response_size_maximum(large_response_size_max);
let request_response = request_response::Behaviour::with_codec(
    non_default_codec,
    std::iter::once((
        StreamProtocol::new("/request-response/1"),
        request_response::ProtocolSupport::Full,
    )),
    request_response::Config::default(),
);

Notes & open questions

• is there an alternative to making the codec module public?

Change checklist

• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• A changelog entry has been made in the appropriate crates

[jxs]

LGTM thanks!

[dariusc93]

LGTM. Left some suggestions and can you update Cargo.toml in both request-response and in the workspace? :)

[dariusc93]

Thanks!

[jxs]

Everything looks good @mosure! Only Cargo.lock updating left