📍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>

extension-objects/src/main/java/concreteextensions/Soldier.java

@@ -24,28 +24,24 @@
 package concreteextensions;
 
 import abstractextensions.SoldierExtension;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import units.SoldierUnit;
 
 /**
  * Class defining Soldier.
  */
+@Getter
+@RequiredArgsConstructor
+@Slf4j
 public class Soldier implements SoldierExtension {
-  private static final Logger LOGGER = LoggerFactory.getLogger(Soldier.class);
 
   private final SoldierUnit unit;
 
-  public Soldier(SoldierUnit soldierUnit) {
-    this.unit = soldierUnit;
-  }
-
   @Override
   public void soldierReady() {
     LOGGER.info("[Soldier] " + unit.getName() + " is ready!");
   }
 
-  public SoldierUnit getUnit() {
-    return unit;
-  }
 }