Add license header

storage/embedded-configuration/src/main/java/org/eclipse/store/storage/embedded/configuration/types/EmbeddedStorageConfigurationPropertyNames.java

@@ -1,6 +1,26 @@
 
 package org.eclipse.store.storage.embedded.configuration.types;
 
+/*-
+ * #%L
+ * EclipseStore Storage Embedded Configuration
+ * %%
+ * Copyright (C) 2023 MicroStream Software
+ * %%
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ * 
+ * This Source Code may also be made available under the following Secondary
+ * Licenses when the conditions for such availability set forth in the Eclipse
+ * Public License, v. 2.0 are satisfied: GNU General Public License, version 2
+ * with the GNU Classpath Exception which is
+ * available at https://www.gnu.org/software/classpath/license.html.
+ * 
+ * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
+ * #L%
+ */
+
 import org.eclipse.serializer.configuration.types.ByteSize;
 
 /**