`types-python-dateutil` Add return type for `rrule.__iter__`?

[michaeloliverx]

from datetime import date

from dateutil.rrule import MONTHLY, rrule

datetimes = [dt for dt in rrule(MONTHLY, dtstart=date(2001, 1, 1), until=date(2005, 1, 1))]

reveal_type(datetimes)  # Revealed type is "builtins.list[Any]"

[AlexWaygood]

PR welcome! :)

[AmberAnsari89]

i want to work on it..please suggest exact changes to be made.

[srittau]

#9828