📍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>

proxy/src/main/java/com/iluwatar/proxy/IvoryTower.java

@@ -23,16 +23,14 @@
 
 package com.iluwatar.proxy;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import lombok.extern.slf4j.Slf4j;
 
 /**
  * The object to be proxied.
  */
+@Slf4j
 public class IvoryTower implements WizardTower {
 
-  private static final Logger LOGGER = LoggerFactory.getLogger(IvoryTower.class);
-
   public void enter(Wizard wizard) {
     LOGGER.info("{} enters the tower.", wizard);
   }

proxy/src/main/java/com/iluwatar/proxy/Wizard.java

@@ -23,17 +23,16 @@
 
 package com.iluwatar.proxy;
 
+import lombok.RequiredArgsConstructor;
+
 /**
  * Wizard.
  */
+@RequiredArgsConstructor
 public class Wizard {
 
   private final String name;
 
-  public Wizard(String name) {
-    this.name = name;
-  }
-
   @Override
   public String toString() {
     return name;

proxy/src/main/java/com/iluwatar/proxy/WizardTowerProxy.java

@@ -23,16 +23,14 @@
 
 package com.iluwatar.proxy;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import lombok.extern.slf4j.Slf4j;
 
 /**
  * The proxy controlling access to the {@link IvoryTower}.
  */
+@Slf4j
 public class WizardTowerProxy implements WizardTower {
 
-  private static final Logger LOGGER = LoggerFactory.getLogger(WizardTowerProxy.class);
-
   private static final int NUM_WIZARDS_ALLOWED = 3;
 
   private int numWizards;