add python type information for MessageQueue class

posix_ipc.pyi

@@ -0,0 +1,19 @@
+from collections.abc import Callable
+from typing import Any
+
+class MessageQueue:
+    def __init__(
+        self,
+        name: str | None,
+        flags: int = ...,
+        mode: int = ...,
+        max_messages: int = ...,
+        max_message_size: int = ...,
+        read: bool = ...,
+        write: bool = ...,
+    ) -> None: ...
+    def send(self, message: str | bytes, timeout: float | None = ..., priority: int = ...) -> None: ...
+    def receive(self, timeout: float | None = ...) -> bytes: ...
+    def request_notification(self, notification: int | tuple[Callable[[Any], None], Any] | None = ...) -> None: ...
+    def close(self) -> None: ...
+    def unlink(self) -> None: ...

setup.py

@@ -71,5 +71,6 @@
                  classifiers=classifiers,
                  license=license,
                  keywords=keywords,
-                 ext_modules=ext_modules
+                 ext_modules=ext_modules,
+                 package_data={"posix_ipc": ["*.pyi", "py.typed"]}
                  )