move generated stubs to separate directory, too messty

django-stubs-generated/utils/regex_helper.pyi

@@ -0,0 +1,20 @@
+from typing import Any, Iterator, List, Optional, Tuple, Type, Union
+
+ESCAPE_MAPPINGS: Any
+
+class Choice(list): ...
+class Group(list): ...
+class NonCapture(list): ...
+
+def normalize(pattern: str) -> List[Tuple[str, List[str]]]: ...
+def next_char(input_iter: Any) -> None: ...
+def walk_to_end(ch: str, input_iter: Iterator[Any]) -> None: ...
+def get_quantifier(
+    ch: str, input_iter: Iterator[Any]
+) -> Tuple[int, Optional[str]]: ...
+def contains(
+    source: Union[Group, NonCapture, str], inst: Type[Group]
+) -> bool: ...
+def flatten_result(
+    source: Optional[Union[List[Union[Choice, Group, str]], Group, NonCapture]]
+) -> Tuple[List[str], List[List[str]]]: ...