Merge in DNS/adguard-home from 2661-imp-stats-logging to master Updates #2661. Squashed commit of the following: commit 474735a5c6ab650973343a1323ebf3c00edd71cf Author: Ainar Garipov <A.Garipov@AdGuard.COM> Date: Thu Feb 11 17:44:34 2021 +0300 stats: imp err handling, logs