feat(deploy): 添加上传文件存储卷配置

- 新增 uploads_volume 卷用于存储上传文件
- 配置卷名称为 datamate-uploads-volume
- 将上传卷挂载到容器 /uploads 目录
- 更新部署配置以支持文件上传功能

deployment/docker/datamate/docker-compose.yml

@@ -11,6 +11,7 @@ services:
       - log_volume:/var/log/datamate
       - operator-upload-volume:/operators/upload
       - operator-runtime-volume:/operators/extract
+      - uploads_volume:/uploads
     networks: [ datamate ]
     depends_on:
       - datamate-database
@@ -154,6 +155,8 @@ services:
     profiles: [ data-juicer ]
 
 volumes:
+  uploads_volume:
+    name: datamate-uploads-volume
   dataset_volume:
     name: datamate-dataset-volume
   flow_volume: