Part 18: Add PersonalInfo.java

Author: JcoderPaul

Spring_part_18/src/main/java/spring/oldboy/dto/PersonalInfo.java

@@ -0,0 +1,8 @@
+package spring.oldboy.dto;
+
+import java.time.LocalDate;
+
+public record PersonalInfo(String firstname,
+                           String lastname,
+                           LocalDate birthDate) {
+}