QUIC server-related API design documents

[Hugo Landau]

I've just put up this which discusses how the QUIC server API proposals
will be validated by reference to real world usage scenarios.

https://github.com/openssl/openssl/pull/22784

The QUIC server API design document, which is subject to revision based
on the outputs of the DDD (Server API) design process, is at:

https://github.com/openssl/openssl/pull/21795

Feedback on these PRs is welcomed on both of these documents, both from
those inside the OpenSSL project and from all of our community.

Hugo Landau
OpenSSL