feat(llm): 添加模型合并日志路径字段

在 AigcFineTuningCreateRespVO 和 AigcFineTuningDetailRespVO 类中添加 mergeLogPath 字段，用于获取模型合并的日志路径。

yudao-module-llm/yudao-module-llm-biz/src/main/java/cn/iocoder/yudao/module/llm/service/http/vo/AigcFineTuningCreateRespVO.java

@@ -25,6 +25,7 @@ public class AigcFineTuningCreateRespVO {
     private String createdAt;
     private String trainPublisher;
     private String trainLog;
+    private String mergeLogPath;
     private String errorMessage;
     private boolean lora;
     private TrainAnalysis trainAnalysis;

yudao-module-llm/yudao-module-llm-biz/src/main/java/cn/iocoder/yudao/module/llm/service/http/vo/AigcFineTuningDetailRespVO.java

@@ -27,6 +27,7 @@ public class AigcFineTuningDetailRespVO {
     private String created_at;
     private String train_publisher;
     private String train_log;
+    private String merge_log_path;
     private String error_message;
     private String lora;
     private TrainAnalysis train_analysis;