Add QUIC support

[baentsch]

As per quictls/quictls#14 PQC QUIC support got "mangled" in some upstream brouhaha. This issue is to suggest re-activating it, either by working on quictls/quictls#14 or by creating an OpenSSL 3.3-dev QUIC demo: At least client-side PQC-QUIC should work.

[pi-314159]

Maybe we can support QUIC using OQS-BoringSSL

[baentsch]

Maybe we can support QUIC using OQS-BoringSSL

Would sure be interesting!

[pi-314159]

Confirmed this approach DOES work with nginx-1.25.4.

The only limitation is it doesn't support X448_* key exchange algorithms and composite & hybrid signature algorithms (as OQS-BoringSSL doesn't support them), but I don't think this is a problem. At least we support NIST-approved ML-* algorithms.