feat(dataset): 添加PDF文本提取功能支持

- 新增dataset模块路由配置
- 添加PdfTextExtractRequest和PdfTextExtractResponse数据传输对象
- 实现PDF文本提取接口，支持从PDF文件中提取文本内容
- 集成数据库会话管理和异步处理能力

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

@@ -6,6 +6,7 @@ from .ratio.interface import router as ratio_router
 from .generation.interface import router as generation_router
 from .evaluation.interface import router as evaluation_router
 from .collection.interface import router as collection_route
+from .dataset.interface import router as dataset_router
 
 router = APIRouter(
     prefix="/api"
@@ -17,5 +18,6 @@ router.include_router(ratio_router)
 router.include_router(generation_router)
 router.include_router(evaluation_router)
 router.include_router(collection_route)
+router.include_router(dataset_router)
 
 __all__ = ["router"]