Pull request 1879: nextapi-opts

Merge in DNS/adguard-home from nextapi-opts to master

Squashed commit of the following:

commit 01f27e374785f47f41470126ddc17cf447e84dd7
Merge: 17d3b06e0 371261b2c
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Tue Jun 20 13:43:08 2023 +0300

    Merge branch 'master' into nextapi-opts

commit 17d3b06e0551908b06be67233181ce4067b6c1cc
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Tue Jun 20 13:15:31 2023 +0300

    next: imp chlog

commit 19d5ea9db0ee077c55c9f1d54a07a3c6b56b4e2e
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Tue Jun 20 12:58:48 2023 +0300

    cmd: typo

commit 082ad5b5fc634a1533127e428680ccf55c0811ab
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Mon Jun 19 22:49:16 2023 +0300

    cmd: imp api, docs, names

commit a49b3cbcc591f36530306c2e08cf1ea7dc8f6d30
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Mon Jun 19 17:13:50 2023 +0300

    next/cmd: add opt parsing

internal/next/configmgr/configmgr.go

@@ -48,7 +48,7 @@ func New(
 	frontend fs.FS,
 	start time.Time,
 ) (m *Manager, err error) {
-	defer func() { err = errors.Annotate(err, "reading config") }()
+	defer func() { err = errors.Annotate(err, "reading config: %w") }()
 
 	conf := &config{}
 	f, err := os.Open(fileName)