refactor: 移动控制器到pipeline包

pkg/core/app.py

@@ -13,8 +13,8 @@ from ..config import manager as config_mgr
 from ..audit.center import v2 as center_mgr
 from ..command import cmdmgr
 from ..plugin import manager as plugin_mgr
-from . import pool, controller
-from ..pipeline import stagemgr
+from . import pool
+from ..pipeline import controller, stagemgr
 from ..utils import version as version_mgr, proxy as proxy_mgr