Merge in DNS/adguard-home from 2799-trusted-proxy to master Updates #2799. Squashed commit of the following: commit 708a06b30116126a575767ea70865a6de90de774 Author: Eugene Burkov <e.burkov@adguard.com> Date: Fri Jul 23 18:56:16 2021 +0300 all: add trusted proxy mechanism