add proxy for the first part and try to develop the second part

Webcal-python/venv/lib/python3.11/site-packages/dateutil-stubs/easter.pyi

@@ -0,0 +1,10 @@
+from datetime import date
+from typing import Final, Literal
+
+__all__ = ["easter", "EASTER_JULIAN", "EASTER_ORTHODOX", "EASTER_WESTERN"]
+
+EASTER_JULIAN: Final = 1
+EASTER_ORTHODOX: Final = 2
+EASTER_WESTERN: Final = 3
+
+def easter(year: int, method: Literal[1, 2, 3] = 3) -> date: ...