Remove setuptools/pkg_resources (#13369)

stubs/fanstatic/fanstatic/registry.pyi

@@ -1,14 +1,19 @@
 from abc import abstractmethod
 from collections.abc import Iterable
 from threading import Lock
-from typing import Any, ClassVar, Literal, Protocol, TypeVar
+from typing import Any, ClassVar, Literal, Protocol, TypeVar, type_check_only
 from typing_extensions import Self
 
 from fanstatic.compiler import Compiler, Minifier
 from fanstatic.core import Library
 from fanstatic.injector import InjectorPlugin
-from pkg_resources import EntryPoint
 
+# Used to be pkg_resources.EntryPoint, but any EntryPoint-like class with a `load` method works
+@type_check_only
+class _EntryPoint(Protocol):
+    def load(self) -> Any: ...  # Can be any attribute in the module
+
+@type_check_only
 class _HasName(Protocol):
     @property
     def name(self) -> str: ...
@@ -24,7 +29,7 @@ class Registry(dict[str, _NamedT]):
     def __init__(self, items: Iterable[_NamedT] = ()) -> None: ...
     def add(self, item: _NamedT) -> None: ...
     def load_items_from_entry_points(self) -> None: ...
-    def make_item_from_entry_point(self, entry_point: EntryPoint) -> Any: ...
+    def make_item_from_entry_point(self, entry_point: _EntryPoint) -> Any: ...
     @classmethod
     def instance(cls) -> Self: ...