Fix mapper + DTO

src/main/java/com/faf223/expensetrackerfaf/dto/UserCreationDTO.java

@@ -6,5 +6,11 @@ import lombok.Data;
 @Data
 @AllArgsConstructor
 public class UserCreationDTO {
-    private String uuid;
+
+    private String firstname;
+    private String lastname;
+    private String username;
+    private String email;
+    private String password;
+
 }