Integrate simple payment handling with WebClient and persist results

pom.xml

@@ -73,6 +73,11 @@
             <artifactId>jakarta.validation-api</artifactId>
             <version>3.1.0</version>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-webflux</artifactId>
+        </dependency>
+
     </dependencies>
 
     <build>