Update codeql.yml

.github/workflows/codeql.yml

@@ -1,3 +1,16 @@
+# ********************************************************************************
+# Copyright (c) 2021 Contributors to the Eclipse Foundation
+#
+# See the NOTICE file(s) with this work for additional
+# information regarding copyright ownership.
+#
+# This program and the accompanying materials are made
+# available under the terms of the Apache Software License 2.0
+# which is available at https://www.apache.org/licenses/LICENSE-2.0.
+#
+# SPDX-License-Identifier: Apache-2.0
+# ********************************************************************************
+
 # For most projects, this workflow file will not need changing; you simply need
 # to commit it to your repository.
 #