write krm metadata to Krmfile instead of Kustomization

kyaml/krmfile/doc.go

@@ -0,0 +1,19 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+// Package krmfile provides functionality for working with Krmfiles.
+//
+// Example Krmfile
+//
+//    apiVersion: config.k8s.io/v1alpha1
+//    kind: Krmfile
+//    openAPI:
+//      definitions:
+//        io.k8s.cli.setters.replicas:
+//          x-k8s-cli:
+//            setter:
+//              name: replicas
+//              value: "3"
+//              setBy: me
+//          description: "hello world"
+package krmfile