mocks: add utimeq

mocks/utimeq.pyi

@@ -0,0 +1,7 @@
+from typing import *
+
+class utimeq:
+    def __init__(self, max_queue_size: int) -> None: ...
+    def push(self, time: int, callback: Any, value: Any) -> None: ...
+    def pop(self, entry: List[Any]) -> None: ...
+    def peektime(self) -> int: ...