add license header to trace_dump

Signed-off-by: Doru Blânzeanu <dblnz@pm.me>

Author: dblnz

src/trace_dump/main.rs

@@ -1,3 +1,19 @@
+/*
+Copyright 2025 The Hyperlight Authors.
+
+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 std::collections::HashMap;
 use std::env;
 use std::fs::File;