Merge in DNS/dnsproxy from doh3-0rtt to master

Squashed commit of the following:

commit fa70069464535bd712c7872b9dcc90068efe7e11
Author: Andrey Meshkov <am@adguard.com>
Date:   Thu Sep 22 13:07:06 2022 +0300

    fix review comments

commit 7c6470b4c35d1ab30b7be44995156885cdb98b93
Author: Andrey Meshkov <am@adguard.com>
Date:   Thu Sep 22 10:51:19 2022 +0300

    upstream: enable 0-RTT for DoH3, fix #273