Add copyright header to pom.xml

Signed-off-by: Florian Dupuy <florian.dupuy@rte-france.com>

Author: flo-dup

.github/config/.licenserc.yaml

@@ -2,7 +2,7 @@ header:
   license:
     spdx-id: MPL-2.0
     pattern: |
-      Copyright copyright \d{4}, RTE \(http:\/\/www\.rte-france\.com\)
+      Copyright \(c\) \d{4}, RTE \(http:\/\/www\.rte-france\.com\)
       This Source Code Form is subject to the terms of the Mozilla Public
       License, v\. 2\.0\. If a copy of the MPL was not distributed with this
       file, You can obtain one at http:\/\/mozilla\.org\/MPL\/2\.0\/\.
@@ -26,5 +26,6 @@ header:
     - '**/*.properties'
     - '**/*.vert'
     - '**/*.frag'
+    - '**/pom.xml'
 
   comment: on-failure

demo/java/network-viewer-demo-data/pom.xml

@@ -1,4 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<!--
+    Copyright (c) 2026, RTE (http://www.rte-france.com)
+    This Source Code Form is subject to the terms of the Mozilla Public
+    License, v. 2.0. If a copy of the MPL was not distributed with this
+    file, You can obtain one at http://mozilla.org/MPL/2.0/.
+-->
 <project xmlns="http://maven.apache.org/POM/4.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">