Added complete Xlib stubs (#9279)

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>

stubs/python-xlib/@tests/stubtest_allowlist.txt

@@ -0,0 +1,34 @@
+# Type helpers
+Xlib._typing
+
+# __all__ is a map at runtime
+# https://github.com/python-xlib/python-xlib/pull/238
+Xlib.ext(\.__all__)?
+
+# These will unconditionally fail at runtime
+# See: https://github.com/python-xlib/python-xlib/issues/253
+Xlib.protocol.rq.DictWrapper.__gt__
+Xlib.protocol.rq.DictWrapper.__lt__
+Xlib.protocol.rq.Event.__gt__
+Xlib.protocol.rq.Event.__lt__
+
+# Default values
+Xlib.protocol.display.Display.send_and_recv
+# Can be None or str once instanciated
+Xlib.protocol.rq.*.structcode
+# Should only ever be str once instanciated
+Xlib.protocol.rq.*.name
+
+# Structs generate their attributes (@type_check_only)
+Xlib.protocol.rq.Struct.__getattr__
+
+# Iteration variable bleed into the global scope
+Xlib.protocol.rq.c
+# Re-export from tkinter
+Xlib.ext.randr.W
+# Re-exports from six
+Xlib.ext.xinput.integer_types
+Xlib.protocol.display.PY3
+Xlib.protocol.display.byte2int
+Xlib.protocol.rq.PY3
+Xlib.protocol.rq.byte2int

stubs/python-xlib/@tests/stubtest_allowlist_win32.txt

@@ -0,0 +1,3 @@
+# failed to import, ModuleNotFoundError: No module named 'fcntl'
+# https://github.com/python-xlib/python-xlib/pull/217
+Xlib.support.unix_connect