📄 api: Fix license header.

mano-vim-api/src/main/java/com/ubiqube/etsi/mano/service/vim/NetowrkSearchField.java

@@ -1,3 +1,19 @@
+/**
+ *     Copyright (C) 2019-2024 Ubiqube.
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see https://www.gnu.org/licenses/.
+ */
 package com.ubiqube.etsi.mano.service.vim;
 
 public enum NetowrkSearchField {