Add multiprocessing.resource_tracker submodule (#8405)

stdlib/VERSIONS

@@ -173,6 +173,7 @@ modulefinder: 2.7-
 msilib: 2.7-
 msvcrt: 2.7-
 multiprocessing: 2.7-
+multiprocessing.resource_tracker: 3.8-
 multiprocessing.shared_memory: 3.8-
 netrc: 2.7-
 nis: 2.7-

stdlib/multiprocessing/resource_tracker.pyi

@@ -0,0 +1,19 @@
+from _typeshed import Incomplete, StrOrBytesPath
+from collections.abc import Sized
+
+__all__ = ["ensure_running", "register", "unregister"]
+
+class ResourceTracker:
+    def __init__(self) -> None: ...
+    def getfd(self) -> int | None: ...
+    def ensure_running(self) -> None: ...
+    def register(self, name: Sized, rtype: Incomplete) -> None: ...
+    def unregister(self, name: Sized, rtype: Incomplete) -> None: ...
+
+_resource_tracker: ResourceTracker = ...
+ensure_running = _resource_tracker.ensure_running
+register = _resource_tracker.register
+unregister = _resource_tracker.unregister
+getfd = _resource_tracker.getfd
+
+def main(fd: StrOrBytesPath | int) -> None: ...