📍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>

thread-pool/README.md

@@ -102,10 +102,9 @@ Next we present a runnable `Worker` class that the thread pool will utilize to h
 peeling and coffee making.
 
 ```java
+@Slf4j
 public class Worker implements Runnable {
 
-  private static final Logger LOGGER = LoggerFactory.getLogger(Worker.class);
-
   private final Task task;
 
   public Worker(final Task task) {