Merge pull request #373 from rtobar/tp-stop

Add annotation for ThreadPool.stop()

src/spead2/__init__.pyi

@@ -82,6 +82,7 @@ class ThreadPool:
     def __init__(self, threads: int = ...) -> None: ...
     @overload
     def __init__(self, threads: int, affinity: list[int]) -> None: ...
+    def stop(self) -> None: ...
     @staticmethod
     def set_affinity(core: int) -> None: ...