add: author

opnsense/10-wan

@@ -1,6 +1,7 @@
 #!/usr/local/bin/php
 <?php
 /**
+ * Author 2025 Etienne Girault <etienne.girault@gmail.com>
  * OPNsense CARP event script
  * - Enables/disables the WAN interface only when needed
  * - Avoids reapplying config when CARP triggers multiple times