update copyright

Author: vossmjp

examples/common/utility/trace_collector.h

@@ -1,5 +1,17 @@
 /*
     Copyright (c) 2026 UXL Foundation Contributors
+
+    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.
 */
 
 #ifndef TRACE_COLLECTOR_H