Pull request 1984: AG-25392 confmigrate vol.1

Merge in DNS/adguard-home from AG-25392-confmigrate to master

Squashed commit of the following:

commit 695717573e228a71e387d1b597f0d32f2eb20e67
Merge: 2c4f3e096 27ec6cd59
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Thu Aug 31 16:22:55 2023 +0300

    Merge branch 'master' into AG-25392-confmigrate

commit 2c4f3e096bb14724c0d0fcc20e5ac1462068504e
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Thu Aug 31 16:13:14 2023 +0300

    all: imp code

commit 0fc6854598a67fc5ea74a93ff8c99b32886f43f1
Merge: 719f2db95 a2ca8b5b4
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Wed Aug 30 18:30:36 2023 +0300

    Merge branch 'master' into AG-25392-confmigrate

commit 719f2db95a337f343752f5b18ce935bae83127be
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Wed Aug 30 15:50:52 2023 +0300

    home: don't reread config

commit 2e25fb738b11675d25574da9e5eebacd72a793ba
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Wed Aug 30 15:43:57 2023 +0300

    all: imp code

commit be3021f03097e18228dd9904dacc283f2576472e
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Wed Aug 30 15:25:46 2023 +0300

    all: introduce confmigrate

scripts/make/go-lint.sh

@@ -177,8 +177,9 @@ run_linter gocyclo --over 10 .
 gocognit_paths="\
 ./internal/aghnet/   20
 ./internal/querylog/ 20
-./internal/dnsforward/ 19
-./internal/home/       19
+./internal/confmigrate/ 19
+./internal/dnsforward/  19
+./internal/home/        19
 ./internal/aghtls/ 18
 ./internal/filtering          17
 ./internal/filtering/rewrite/ 17
@@ -240,6 +241,7 @@ run_linter gosec --quiet\
 	./internal/aghrenameio/\
 	./internal/aghtest\
 	./internal/client\
+	./internal/confmigrate\
 	./internal/dhcpd\
 	./internal/dhcpsvc\
 	./internal/dnsforward\