fix: Donate历史

backend/src/main/java/com/openisle/model/PostChangeType.java

@@ -10,4 +10,5 @@ public enum PostChangeType {
   FEATURED,
   VOTE_RESULT,
   LOTTERY_RESULT,
+  DONATE,
 }

backend/src/main/java/com/openisle/model/PostDonateChangeLog.java

@@ -0,0 +1,19 @@
+package com.openisle.model;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Table;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@Getter
+@Setter
+@NoArgsConstructor
+@Entity
+@Table(name = "post_donate_change_logs")
+public class PostDonateChangeLog extends PostChangeLog {
+
+  @Column(nullable = false)
+  private int amount;
+}