Add license note

Signed-off-by: Javier G. Sogo <[email protected]>

Author: jgsogo

src/segment_evaluation/errors.rs

@@ -1,3 +1,17 @@
+// (C) Copyright IBM Corp. 2024.
+//
+// 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.
+
 use thiserror::Error;
 
 use crate::models::{Segment, SegmentRule};