📍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>

event-asynchronous/src/main/java/com/iluwatar/event/asynchronous/EventManager.java

@@ -53,7 +53,7 @@ public class EventManager implements ThreadCompleteListener {
    */
   public EventManager() {
     rand = new SecureRandom();
-    eventPool = new ConcurrentHashMap<Integer, Event>(MAX_RUNNING_EVENTS);
+    eventPool = new ConcurrentHashMap<>(MAX_RUNNING_EVENTS);
 
   }