adds building native image

Author: rajadilipkolli

.github/workflows/kafka-sample-spring-modulith.yml

@@ -40,3 +40,5 @@ jobs:
         native-image --version
     - name: Build with Maven
       run: ./mvnw -B -Pnative verify --file pom.xml
+    - name: Build native Image
+      run: ./mvnw -Pnative spring-boot:build-image -DskipTests