📍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>

transaction-script/README.md

@@ -29,8 +29,8 @@ Programmatic example
 The `Hotel` class takes care of booking and cancelling room reservations.
 
 ```java
+@Slf4j
 public class Hotel {
-  private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
 
   private final HotelDaoImpl hotelDao;