Add parameter filterset to filterset_factory (#20)

* Add parameter filterset to filterset_factory

The parameter filterset has been added in version 24.1

* Fix type of BaseFilterSet.filter_for_field lookup_expr

default value of lookup_expr is None, therefore it should have the respective type

* Apply black

---------

Co-authored-by: Martin Reidemeister <[email protected]>

Author: H4rryK4ne

django_filters-stubs/filterset.pyi

@@ -1,4 +1,4 @@
-from typing import Any, Optional
+from typing import Any, Optional, TypeVar
 
 from .conf import settings
 from .constants import ALL_FIELDS
@@ -69,10 +69,16 @@ class BaseFilterSet:
     @classmethod
     def get_filters(cls): ...
     @classmethod
-    def filter_for_field(cls, field: Any, field_name: Any, lookup_expr: str = ...): ...
+    def filter_for_field(
+        cls, field: Any, field_name: Any, lookup_expr: str | None = ...
+    ) -> Filter | None: ...
     @classmethod
     def filter_for_lookup(cls, field: Any, lookup_type: Any): ...
 
 class FilterSet(BaseFilterSet, metaclass=FilterSetMetaclass): ...
 
-def filterset_factory(model: Any, fields: Any = ...): ...
+_F = TypeVar("_F", bound=FilterSet)
+
+def filterset_factory(
+    model: Any, filterset: type[_F] | None = ..., fields: Any = ...
+) -> type[_F]: ...