加入积分系统，将充值与积分关联

src/main/java/com/ai/da/mapper/primary/entity/Account.java

@@ -8,6 +8,7 @@ import lombok.EqualsAndHashCode;
 import lombok.experimental.Accessors;
 
 import java.io.Serializable;
+import java.math.BigDecimal;
 import java.util.Date;
 
 /**
@@ -80,4 +81,9 @@ public class Account implements Serializable {
     private Integer isBeginner;
 
     private String browserIdentifiers;
+
+    /**
+     * 积分
+     */
+    private BigDecimal credits;
 }