Add overloads for the mod function to support various input types

Author: hunterhogan

stdlib/_operator.pyi

@@ -65,7 +65,24 @@ def index(a: SupportsIndex, /) -> int: ...
 def inv(a: _SupportsInversion[_T_co], /) -> _T_co: ...
 def invert(a: _SupportsInversion[_T_co], /) -> _T_co: ...
 def lshift(a: Any, b: Any, /) -> Any: ...
-def mod(a: Any, b: Any, /) -> Any: ...
+@overload
+def mod(a: bool, b: bool, /) -> int: ...
+@overload
+def mod(a: bool, b: int, /) -> int: ...
+@overload
+def mod(a: bool, b: float, /) -> float: ...
+@overload
+def mod(a: int, b: bool, /) -> int: ...
+@overload
+def mod(a: int, b: int, /) -> int: ...
+@overload
+def mod(a: int, b: float, /) -> float: ...
+@overload
+def mod(a: float, b: bool, /) -> float: ...
+@overload
+def mod(a: float, b: int, /) -> float: ...
+@overload
+def mod(a: float, b: float, /) -> float: ...
 def mul(a: Any, b: Any, /) -> Any: ...
 def matmul(a: Any, b: Any, /) -> Any: ...
 def neg(a: _SupportsNeg[_T_co], /) -> _T_co: ...