Add license header

Kitodo/src/test/resources/newspaper-course.xml

@@ -1,4 +1,16 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<!--
+ *
+ * (c) Kitodo. Key to digital objects e. V. <[email protected]>
+ *
+ * This file is part of the Kitodo project.
+ *
+ * It is licensed under GNU General Public License version 3 or later.
+ *
+ * For the full copyright and license information, please read the
+ * GPL3-License.txt file that was distributed with this source code.
+ *
+-->
 <course>
    <description>Die Zeitung erschien vom 1. Januar 2024 bis zum 31. Januar 2024 regelmäßig an allen Montagen, Dienstagen, Mittwochen, Donnerstagen und Freitagen.</description>
    <processes>