feat: add point history

backend/src/main/java/com/openisle/dto/PointHistoryDto.java

@@ -0,0 +1,23 @@
+package com.openisle.dto;
+
+import com.openisle.model.PointHistoryType;
+import lombok.Getter;
+import lombok.Setter;
+
+import java.time.LocalDateTime;
+
+@Getter
+@Setter
+public class PointHistoryDto {
+    private Long id;
+    private PointHistoryType type;
+    private int amount;
+    private int balance;
+    private Long postId;
+    private String postTitle;
+    private Long commentId;
+    private String commentContent;
+    private Long fromUserId;
+    private String fromUserName;
+    private LocalDateTime createdAt;
+}