Merge in DNS/adguard-home from linter-version-update to master
Squashed commit of the following:
commit 3ab2cb198dd924d86f5e6b92d101846acc747e9b
Author: Eugene Burkov <e.burkov@adguard.com>
Date: Wed Nov 18 16:42:13 2020 +0300
all: update golangci-lint and golangci-lint-actions versions
* Added Makefile
* Updated README with the new information
* Updated Github Actions
* Added FreeBSD ARM builds
* Prepared to our internal CI
* Improved the auto-update version check