[lunardate] Add stubs (#14650)

stubs/lunardate/METADATA.toml

@@ -0,0 +1,2 @@
+version = "0.2.*"
+upstream_repository = "https://github.com/lidaobing/python-lunardate"

stubs/lunardate/lunardate.pyi

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+import datetime
+from _typeshed import ConvertibleToInt
+from typing import Final, SupportsIndex, overload
+
+__version__: Final[str]
+__all__ = ["LunarDate"]
+
+class LunarDate:
+    year: int
+    month: int
+    day: int
+    isLeapMonth: bool
+    def __init__(self, year: int, month: int, day: int, isLeapMonth: bool | None = False) -> None: ...
+    @staticmethod
+    def leapMonthForYear(year: int) -> int | None: ...
+    @staticmethod
+    def fromSolarDate(year: SupportsIndex, month: SupportsIndex, day: SupportsIndex) -> LunarDate: ...
+    def toSolarDate(self) -> datetime.date: ...
+    @overload
+    def __sub__(self, other: LunarDate | datetime.date) -> datetime.timedelta: ...
+    @overload
+    def __sub__(self, other: datetime.timedelta) -> LunarDate: ...
+    def __rsub__(self, other: datetime.date) -> datetime.timedelta: ...
+    def __add__(self, other: datetime.timedelta) -> LunarDate: ...
+    def __radd__(self, other: datetime.timedelta) -> LunarDate: ...
+    def __eq__(self, other: object) -> bool: ...
+    def __lt__(self, other: LunarDate | datetime.date) -> bool: ...
+    def __le__(self, other: object) -> bool: ...
+    def __gt__(self, other: object) -> bool: ...
+    def __ge__(self, other: LunarDate | datetime.date) -> bool: ...
+    @classmethod
+    def today(cls) -> LunarDate: ...
+
+yearInfos: Final[list[int]]
+
+def yearInfo2yearDay(yearInfo: ConvertibleToInt) -> int: ...
+
+yearDays: Final[list[int]]
+
+def day2LunarDate(offset: ConvertibleToInt) -> None: ...