feat: Update copyright header on all Java files

Resolves #16 (closed)

core/src/main/java/org/eclipsefoundation/core/config/CSRFGeneratorProvider.java

+/*********************************************************************
+* Copyright (c) 2022 Eclipse Foundation.
+*
+* This program and the accompanying materials are made
+* available under the terms of the Eclipse Public License 2.0
+* which is available at https://www.eclipse.org/legal/epl-2.0/
+*
+* Author: Martin Lowe <martin.lowe@eclipse-foundation.org>
+*
+* SPDX-License-Identifier: EPL-2.0
+**********************************************************************/
 package org.eclipsefoundation.core.config;
 
 import javax.enterprise.context.Dependent;