add dir_manager to Runner

src/runner.py

@@ -2,6 +2,7 @@ from pathlib import Path
 from typing import Callable, Optional, TypedDict
 
 import pytest
+from dirmanager import DirManager
 from icecream import ic
 
 
@@ -19,6 +20,7 @@ class Runner:
         self.dotenv_path = dotenv_path
         self.tests_dir = tests_dir
         self.session_id = session_id
+        self.dir_manager = DirManager(tests_dir, session_id)
 
         ic(f"creating instance of {self.__class__.__name__}")
         assert self.test_dir_name is not None