fix output typing, change mutable list to immutable tuple (#989)

* fix output typing, change mutable list to immutable tuple

* import missed type

* format

---------
Co-authored-by: Leymore <zfz-960727@163.com>

opencompass/utils/file.py

 import fnmatch
 import os
-from typing import List, Union
+from typing import List, Tuple, Union
 
 
 def match_files(path: str,
                 pattern: Union[str, List],
-                fuzzy: bool = False) -> List:
+                fuzzy: bool = False) -> List[Tuple[str, str]]:
     if isinstance(pattern, str):
         pattern = [pattern]
     if fuzzy:
@@ -15,7 +15,7 @@ def match_files(path: str,
         for name in files:
             for p in pattern:
                 if fnmatch.fnmatch(name.lower(), p.lower()):
-                    files_list.append([name[:-3], os.path.join(root, name)])
+                    files_list.append((name[:-3], os.path.join(root, name)))
                     break
 
     return sorted(files_list, key=lambda x: x[0])

opencompass/utils/run.py

 import os
-from typing import List, Union
+from typing import List, Tuple, Union
 
 import tabulate
 from mmengine.config import Config
@@ -12,7 +12,8 @@ from opencompass.tasks import OpenICLEvalTask, OpenICLInferTask
 from opencompass.utils import get_logger, match_files
 
 
-def match_cfg_file(workdir: str, pattern: Union[str, List[str]]) -> List[str]:
+def match_cfg_file(workdir: str,
+                   pattern: Union[str, List[str]]) -> List[Tuple[str, str]]:
     """Match the config file in workdir recursively given the pattern.
 
     Additionally, if the pattern itself points to an existing file, it will be