webdriver: Add license header

tools/webdriver/src/main/java/com/wpe/webdriver/WebDriverActivity.kt

@@ -1,3 +1,23 @@
+/**
+ * Copyright (C) 2024 Igalia S.L. <[email protected]>
+ *   Author: Jani Hautakangas <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+
 package com.wpe.webdriver
 
 import android.content.Context