Adding missing copyright headers

Thx to review and merge if you agree

README.md

+<!--- *************************************************************************
+      *Copyright 2024 CERTH
+      *
+      *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.
+      ************************************************************************* --->
+
 # Access Control
 
 ## Description