[openssl/openssl] cb6295: Add an initial QUIC Technical requirements document

[matt]

  Branch: refs/heads/master
  Home:   https://github.openssl.org/openssl/openssl
  Commit: cb629550cdab518c925e9b402e11b86497a03845
      https://github.openssl.org/openssl/openssl/commit/cb629550cdab518c925e9b402e11b86497a03845
  Author: Matt Caswell <matt at openssl.org>
  Date:   2022-04-12 (Tue, 12 Apr 2022)

  Changed paths:
    A doc/designs/quic-design/quic-requirements.md

  Log Message:
  -----------
  Add an initial QUIC Technical requirements document

Reviewed-by: Tim Hudson <tjh at openssl.org>
Reviewed-by: Tomas Mraz <tomas at openssl.org>
Reviewed-by: Matt Caswell <matt at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/17577)