API: add NaTType and NAType to pandas.api.typing (#53958)

* API: add NaTType and NAType to pandas.api.typing

* updated test

Author: Charlie-XIAO

pandas/api/typing/__init__.py

@@ -2,6 +2,9 @@
 Public API classes that store intermediate results useful for type-hinting.
 """
 
+from pandas._libs import NaTType
+from pandas._libs.missing import NAType
+
 from pandas.core.groupby import (
     DataFrameGroupBy,
     SeriesGroupBy,
@@ -36,6 +39,8 @@
     "ExponentialMovingWindow",
     "ExponentialMovingWindowGroupby",
     "JsonReader",
+    "NaTType",
+    "NAType",
     "PeriodIndexResamplerGroupby",
     "Resampler",
     "Rolling",

pandas/tests/api/test_api.py

@@ -259,6 +259,8 @@ class TestApi(Base):
         "ExponentialMovingWindow",
         "ExponentialMovingWindowGroupby",
         "JsonReader",
+        "NaTType",
+        "NAType",
         "PeriodIndexResamplerGroupby",
         "Resampler",
         "Rolling",