fix: add UnsupportedOperationException in KingsHand and GameLoopTest

Author: SalmaAzeem

event-aggregator/src/main/java/com/iluwatar/event/aggregator/KingsHand.java

@@ -43,5 +43,6 @@ public void onEvent(Event e) {
 
   @Override
   public void timePasses(Weekday day) {
+    throw new UnsupportedOperationException("KingsHand does not support time passing");
   }
 }

game-loop/src/test/java/com/iluwatar/gameloop/GameLoopTest.java

@@ -24,10 +24,9 @@
  */
 package com.iluwatar.gameloop;
 
-import static org.junit.jupiter.api.Assertions.assertFalse;
-
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.Assertions;
+import static org.junit.jupiter.api.Assertions.assertFalse;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
@@ -46,6 +45,7 @@ void setup() {
     gameLoop = new GameLoop() {
       @Override
       protected void processGameLoop() {
+        throw new UnsupportedOperationException("Not supported yet.");
       }
     };
   }