Feature store v3 (#5490)

* feat: Add Feature Store Support to V3

* Add feature store tests

---------

Co-authored-by: adishaa <adishaa@amazon.com>

Author: 2 people

sagemaker-mlops/src/sagemaker/mlops/feature_store/feature_utils.py

@@ -731,4 +731,4 @@ def _cast_object_to_string(data_frame: pandas.DataFrame) -> pandas.DataFrame:
     """
     for label in data_frame.select_dtypes(["object", "O"]).columns.tolist():
         data_frame[label] = data_frame[label].astype("str").astype("string")
-    return data_frame
+    return data_frame