Update pkg structure to avoid circular import

pkg/commands/edit/util/functions.go

@@ -0,0 +1,26 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package util
+
+import (
+	"log"
+
+	"sigs.k8s.io/kustomize/v3/pkg/fs"
+)
+
+func GlobPatterns(fsys fs.FileSystem, patterns []string) ([]string, error) {
+	var result []string
+	for _, pattern := range patterns {
+		files, err := fsys.Glob(pattern)
+		if err != nil {
+			return nil, err
+		}
+		if len(files) == 0 {
+			log.Printf("%s has no match", pattern)
+			continue
+		}
+		result = append(result, files...)
+	}
+	return result, nil
+}