[BE] Apply ufmt to run_test and GitHub Python util scripts (#97588)

This has been bugging me for a while as I'm working on these Python scripts and they are not tracked by ufmt linter.  So I add these script into that linter.

```
[[linter]]
code = 'UFMT'
include_patterns = [
    '.github/**/*.py',
    'test/run_test.py',
```

This change should just work and not break anything as ufmt (black + usort) linter is very safe to use for standalone util scripts.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/97588
Approved by: https://github.com/kit1980

.github/scripts/test_gitutils.py

@@ -1,7 +1,14 @@
 #!/usr/bin/env python3
-from gitutils import PeekableIterator, patterns_to_regex, GitRepo, are_ghstack_branches_in_sync, _shasum
-from unittest import TestCase, main, SkipTest
 from pathlib import Path
+from unittest import main, SkipTest, TestCase
+
+from gitutils import (
+    _shasum,
+    are_ghstack_branches_in_sync,
+    GitRepo,
+    patterns_to_regex,
+    PeekableIterator,
+)
 
 
 BASE_DIR = Path(__file__).parent
@@ -15,6 +22,7 @@ class TestPeekableIterator(TestCase):
 
     def test_is_iterable(self) -> None:
         from collections.abc import Iterator
+
         iter_ = PeekableIterator("")
         self.assertTrue(isinstance(iter_, Iterator))
 
@@ -35,7 +43,8 @@ class TestPattern(TestCase):
         patterns_re = patterns_to_regex(allowed_patterns)
         fnames = [
             "aten/src/ATen/native/LinearAlgebra.cpp",
-            "aten/src/ATen/native/cpu/LinearAlgebraKernel.cpp"]
+            "aten/src/ATen/native/cpu/LinearAlgebraKernel.cpp",
+        ]
         for filename in fnames:
             self.assertTrue(patterns_re.match(filename))
 
@@ -44,11 +53,13 @@ class TestGitRepo(TestCase):
     def setUp(self) -> None:
         repo_dir = BASE_DIR.parent.parent.absolute()
         if not (repo_dir / ".git").is_dir():
-            raise SkipTest("Can't find git directory, make sure to run this test on real repo checkout")
+            raise SkipTest(
+                "Can't find git directory, make sure to run this test on real repo checkout"
+            )
         self.repo = GitRepo(str(repo_dir))
 
     def _skip_if_ref_does_not_exist(self, ref: str) -> None:
-        """ Skip test if ref is missing as stale branches are deleted with time """
+        """Skip test if ref is missing as stale branches are deleted with time"""
         try:
             self.repo.show_ref(ref)
         except RuntimeError as e:
@@ -69,5 +80,6 @@ class TestGitRepo(TestCase):
         self._skip_if_ref_does_not_exist(head_ref)
         self.assertFalse(are_ghstack_branches_in_sync(self.repo, head_ref))
 
-if __name__ == '__main__':
+
+if __name__ == "__main__":
     main()