Pull request 2149: 6711 watch hosts

Updates #6711.

Squashed commit of the following:

commit 3ddfe809f76325c2d4cda0715a7bcc15e76a2388
Merge: 185957cd0 d338451fa
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Feb 13 13:01:30 2024 +0300

    Merge branch 'master' into 6711-watch-hosts

commit 185957cd01516e5955e388108615e6f131d6ad71
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Fri Feb 9 18:11:41 2024 +0300

    aghos: imp docs

commit 3afbbcbb7ab6cc60c7c40ef8acd5b3ddf52cb3d1
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Fri Feb 9 15:40:02 2024 +0300

    all: upd golibs, imp fswatcher

internal/filtering/rewrites.go

@@ -8,7 +8,6 @@ import (
 
 	"github.com/AdguardTeam/golibs/errors"
 	"github.com/AdguardTeam/golibs/log"
-	"github.com/AdguardTeam/golibs/mathutil"
 	"github.com/miekg/dns"
 )
 
@@ -181,7 +180,7 @@ func findRewrites(
 		if isWildcard(r.Domain) {
 			// Don't use rewrites[:0], because we need to return at least one
 			// item here.
-			rewrites = rewrites[:mathutil.Max(1, i)]
+			rewrites = rewrites[:max(1, i)]
 
 			break
 		}