feat(annotation): 添加标注数据导出功能

- 新增导出对话框组件，支持多种格式选择
- 实现 JSON、JSONL、CSV、COCO、YOLO 五种导出格式
- 添加导出统计信息显示，包括总文件数和已标注数
- 集成前端导出按钮和后端 API 接口
- 支持仅导出已标注数据和包含原始数据选项
- 实现文件下载和命名功能

runtime/datamate-python/app/module/annotation/interface/__init__.py

@@ -2,10 +2,11 @@ from fastapi import APIRouter
 
 from .config import router as about_router
 from .project import router as project_router
-from .task import router as task_router
-from .template import router as template_router
-from .auto import router as auto_router
-from .editor import router as editor_router
+from .task import router as task_router
+from .template import router as template_router
+from .auto import router as auto_router
+from .editor import router as editor_router
+from .export import router as export_router
 
 router = APIRouter(
     prefix="/annotation",
@@ -14,7 +15,8 @@ router = APIRouter(
 
 router.include_router(about_router)
 router.include_router(project_router)
-router.include_router(task_router)
-router.include_router(template_router)
-router.include_router(auto_router)
-router.include_router(editor_router)
+router.include_router(task_router)
+router.include_router(template_router)
+router.include_router(auto_router)
+router.include_router(editor_router)
+router.include_router(export_router)