refactor: add topic names when logging topics created

Usability fix to know which topics are created during benchmark setup.
This helps when running multiple benchmarks and want to look metrics for specific topics.

benchmark-framework/src/main/java/io/openmessaging/benchmark/WorkloadGenerator.java

@@ -71,7 +71,11 @@ public TestResult run() throws Exception {
         Timer timer = new Timer();
         List<String> topics =
                 worker.createTopics(new TopicsInfo(workload.topics, workload.partitionsPerTopic));
-        log.info("Created {} topics in {} ms", topics.size(), timer.elapsedMillis());
+        log.info(
+                "Created {} topics in {} ms, topics: [{}]",
+                topics.size(),
+                timer.elapsedMillis(),
+                String.join(",", topics));
 
         createConsumers(topics);
         createProducers(topics);