📍Use lombok, reformat, and optimize the code (#1560)

* Use lombok, reformat, and optimize the code

* Fix merge conflicts and some sonar issues

Co-authored-by: va1m <va1m@email.com>

eip-splitter/pom.xml

@@ -60,13 +60,7 @@
             <artifactId>jaxb-api</artifactId>
         </dependency>
 
-
         <!-- Testing -->
-        <dependency>
-            <groupId>com.github.sbrannen</groupId>
-            <artifactId>spring-test-junit5</artifactId>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-engine</artifactId>

eip-splitter/src/test/java/com/iluwatar/eip/splitter/routes/SplitterRouteTest.java

@@ -47,7 +47,7 @@ import org.springframework.test.context.junit.jupiter.SpringExtension;
 @ActiveProfiles("test")
 @EnableAutoConfiguration
 @ComponentScan
-public class SplitterRouteTest {
+class SplitterRouteTest {
 
   @EndpointInject(uri = "{{entry}}")
   private ProducerTemplate entry;
@@ -62,7 +62,7 @@ public class SplitterRouteTest {
    */
   @Test
   @DirtiesContext
-  public void testSplitter() throws Exception {
+  void testSplitter() throws Exception {
 
     // Three items in one entry message
     entry.sendBody(new String[]{"TEST1", "TEST2", "TEST3"});