Merge in DNS/adguard-home from 700-validate to master
Updates #700.
Squashed commit of the following:
commit 9cd9ff2d23352e00c7782cf68195809111c832e5
Author: Ildar Kamalov <ik@adguard.com>
Date: Wed Apr 6 18:50:11 2022 +0300
client: validate only enabled encryption form