GH-191: Add Kafka Batch Mode Sample

Resolves https://github.com/spring-cloud/spring-cloud-stream-samples/issues/191

kafka-batch-sample/src/test/java/com/example/demo/KafkaBatchSampleApplicationTests.java

@@ -0,0 +1,13 @@
+package com.example.demo;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class KafkaBatchSampleApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}