모의투자 관리 기능 추가

backend/src/main/java/com/goldenchart/dto/PaperLedgerEntryDto.java

@@ -0,0 +1,17 @@
+package com.goldenchart.dto;
+
+import lombok.Builder;
+import lombok.Data;
+
+@Data
+@Builder
+public class PaperLedgerEntryDto {
+    private Long   id;
+    private String entryType;
+    private Double amount;
+    private Double cashBefore;
+    private Double cashAfter;
+    private Long   refTradeId;
+    private String symbol;
+    private String createdAt;
+}