Add documented PixelAccess and PyAccess methods

stubs/Pillow/PIL/PyAccess.pyi

@@ -11,9 +11,9 @@ class PyAccess:
     image: Any
     def __init__(self, img, readonly: bool = ...) -> None: ...
     def __setitem__(self, xy, color) -> None: ...
-    def __getitem__(self, xy): ...
-    putpixel: Any
-    getpixel: Any
+    def __getitem__(self, xy) -> Any: ...
+    def putpixel(self, xy, color) -> None: ...
+    def getpixel(self, xy) -> Any: ...
     def check_xy(self, xy): ...
 
 class _PyAccess32_2(PyAccess):

stubs/Pillow/PIL/_imaging.pyi

@@ -1,5 +1,6 @@
 from _typeshed import Incomplete
 from collections.abc import Sequence
+from typing import Any
 from typing_extensions import Literal
 
 DEFAULT_STRATEGY: Literal[0]
@@ -14,7 +15,11 @@ class _PixelAccess:
     # https://github.com/python-pillow/Pillow/blob/main/docs/reference/PixelAccess.rst
     # The name is prefixed here with an underscore as PixelAccess is not
     # runtime-importable.
-    def __getattr__(self, item: str) -> Incomplete: ...
+
+    def __setitem__(self, xy, color) -> None: ...
+    def __getitem__(self, xy) -> Any: ...
+    def putpixel(self, xy, color) -> None: ...
+    def getpixel(self, xy) -> Any: ...
 
 class _Path:
     def __getattr__(self, item: str) -> Incomplete: ...