라벨링 툴 pnu 정보 list string으로 수정

src/main/java/com/kamco/cd/kamcoback/trainingdata/dto/TrainingDataLabelDto.java

@@ -358,7 +358,7 @@ public class TrainingDataLabelDto {
     private Double detectionAccuracy;
 
     @Schema(description = "PNU (필지고유번호)", example = "36221202306020")
-    private Long pnu;
+    private List<String> pnu;
 
     @Schema(description = "도엽번호 (map_sheet_num)", example = "34602057")
     private Long mapSheetNum;

src/main/java/com/kamco/cd/kamcoback/trainingdata/dto/TrainingDataReviewDto.java

@@ -351,7 +351,7 @@ public class TrainingDataReviewDto {
     private Double detectionAccuracy;
 
     @Schema(description = "PNU (필지고유번호)", example = "36221202306020")
-    private Long pnu;
+    private List<String> pnu;
 
     @Schema(description = "도엽번호 (map_sheet_num)", example = "34602057")
     private Long mapSheetNum;