add MergeAccounts utility for merging user accounts by shared emails

Author: AlafariAbdullah

src/main/java/com/thealgorithms/graph/MergeAccounts.java

@@ -16,7 +16,6 @@ public class MergeAccounts {
  */
 
     private static List<Integer> Unneeded = new ArrayList<Integer>();
-
     private static List<List<String>> originalAccounts;
     public static List<List<String>> mergeAccounts(List<List<String>> inputAccounts){
         originalAccounts = inputAccounts;
@@ -29,8 +28,8 @@ public static List<List<String>> mergeAccounts(List<List<String>> inputAccounts)
 
 
                 }
-           }
- 
+            }
+
         }
     removeUnneeded();
     return originalAccounts;