add auther config

pkg/common/util/auth/auth.go

@@ -1,24 +0,0 @@
-package auth
-
-import (
-	"net/url"
-
-	"github.com/go-gost/gost/pkg/auth"
-)
-
-func AuthFromUsers(users ...*url.Userinfo) auth.Authenticator {
-	kvs := make(map[string]string)
-	for _, v := range users {
-		if v == nil || v.Username() == "" {
-			continue
-		}
-		kvs[v.Username()], _ = v.Password()
-	}
-
-	var authenticator auth.Authenticator
-	if len(kvs) > 0 {
-		authenticator = auth.NewMapAuthenticator(kvs)
-	}
-
-	return authenticator
-}