chore: re-add comment block to comments.pbxproj

Author: erisu

test/parser/projects/comments.pbxproj

@@ -1,4 +1,22 @@
 // !$*UTF8*$!
+/*
+	Licensed to the Apache Software Foundation (ASF) under one
+	or more contributor license agreements.  See the NOTICE file
+	distributed with this work for additional information
+	regarding copyright ownership.  The ASF licenses this file
+	to you 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.
+*/
 {
     archiveVersion = 1;
     classes = {