chore: adds consistent vanity import to files and provides tooling for verifying and updating them. (#120642)

* chore: drops update vanity imports from script.

* chore: changes copyright year to 2024.

* chore: makes lint happy.

hack/update-vanity-imports.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+
+# Copyright 2024 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This script fixes the vanity imports programmatically.
+# Usage: `hack/update-vanity-imports.sh`.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+KUBE_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
+source "${KUBE_ROOT}/hack/lib/init.sh"
+
+kube::golang::verify_go_version
+
+pushd "${KUBE_ROOT}/hack/tools" >/dev/null
+    GO111MODULE=on go install github.com/jcchavezs/porto/cmd/porto
+popd >/dev/null
+
+porto --restrict-to-dirs="staging" --restrict-to-files="doc\\.go$" -w "${KUBE_ROOT}"
+