베스트 에폭 API, 2단계 실행 시 best epoch 업데이트

src/main/java/com/kamco/cd/training/model/dto/ModelTrainDetailDto.java

@@ -231,4 +231,18 @@ public class ModelTrainDetailDto {
     private Long detectionCount;
     private Long gtCount;
   }
+
+  @Getter
+  @Setter
+  @NoArgsConstructor
+  @AllArgsConstructor
+  public static class ModelBestEpoch {
+    private Integer epoch;
+    private Double loss;
+    private Float f1Score;
+    private Float precision;
+    private Float recall;
+    private Float iou;
+    private Float accuracy;
+  }
 }