feat: 수강신청 프로젝트 생성

src/main/java/com/study/course_registration/entity/BaseEntity.java

@@ -0,0 +1,15 @@
+package com.study.course_registration.entity;
+
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.MappedSuperclass;
+import lombok.Getter;
+
+@Getter
+@MappedSuperclass 
+public class BaseEntity {
+    @Id 
+    @GeneratedValue(strategy = GenerationType.UUID)
+    private String id;
+}