Modularize the data-streams component (#87157)

This is change modularizes data-streams, by adding a module-info.java

modules/data-streams/src/main/java/module-info.java

@@ -0,0 +1,17 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+module org.elasticsearch.datastreams {
+    requires org.elasticsearch.base;
+    requires org.elasticsearch.server;
+    requires org.elasticsearch.xcontent;
+    requires org.apache.logging.log4j;
+    requires org.apache.lucene.core;
+
+    exports org.elasticsearch.datastreams.action to org.elasticsearch.server;
+}