Enable QUIC by default

Enable QUIC by default

Ensure builds enable QUIC without explicitly having to ask for it. To
disable QUIC pass "no-quic" to Configure.

As a result we can remove all use of "enable-quic" from the various CI
runs.

We also add a CHANGES and NEWS entry for QUIC support.

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21332)