goldenChat base source add

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

@@ -0,0 +1,28 @@
+package com.goldenchart.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+/**
+ * 매매 시그널 이력 DTO.
+ */
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class TradeSignalDto {
+    private Long   id;
+    private String market;
+    private Long   strategyId;
+    private String strategyName;
+    /** BUY | SELL */
+    private String signalType;
+    private Double price;
+    private Long   candleTime;
+    private String candleType;
+    /** CANDLE_CLOSE | REALTIME_TICK */
+    private String executionType;
+    private String createdAt;
+}