Add support for Date features in Croissant schema (#3223)

* Update croissant_utils.py

* Update croissant_utils.py

* Update croissant_utils.py

ImportError: cannot import name 'Date' from 'datasets'

* Changes as per the spec and `mlcroissant`

removed `sc:Time` and now only use `sc:Date` and `sc:DateTime`. Also added a fallback import to avoid CI issues on older `datasets` versions.

* Update croissant_utils.py

* Update croissant_utils.py

* Update croissant_utils.py

* Update croissant_utils.py

---------

Co-authored-by: Sylvain Lesage <[email protected]>

Author: ArjunJagdale

libs/libcommon/src/libcommon/croissant_utils.py

@@ -77,9 +77,14 @@ def truncate_features_from_croissant_crumbs_response(content: Mapping[str, Any])
     "int64": "cr:Int64",
     "large_string": "sc:Text",
     "string": "sc:Text",
-    "time32": "sc:Date",
-    "time64": "sc:Date",
-    "timestamp[ns]": "sc:Date",
+    "time32[s]": "sc:Time",
+    "time32[ms]": "sc:Time",
+    "time64[us]": "sc:Time",
+    "time64[ns]": "sc:Time",
+    "timestamp[s]": "sc:DateTime",
+    "timestamp[ms]": "sc:DateTime",
+    "timestamp[us]": "sc:DateTime",
+    "timestamp[ns]": "sc:DateTime",
     "uint8": "cr:UInt8",
     "uint16": "cr:UInt16",
     "uint32": "cr:UInt32",
@@ -202,4 +207,5 @@ def feature_to_croissant_field(
             field["isArray"] = True
             field["arrayShape"] = ",".join([str(shape) if shape else "-1" for shape in array_shape])
             return field
+
     return None