fix(license): restore license header in role.yaml file

Restored the Apache 2.0 license header that was accidentally removed from
controllers/license/config/rbac/role.yaml during the kube-rbac-proxy
replacement.

Co-authored-by: zzjin <679757+zzjin@users.noreply.github.com>

Author: Copilot

controllers/license/config/rbac/role.yaml

@@ -1,3 +1,17 @@
+# Copyright © 2024 sealos.
+#
+# 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.
+
 ---
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRole