Add Streaming Dataset (#1613)

Co-authored-by: Michel Aractingi <michel.aractingi@huggingface.co>

src/lerobot/datasets/lerobot_dataset.py

@@ -129,6 +129,10 @@ class LeRobotDatasetMetadata:
             ignore_patterns=ignore_patterns,
         )
 
+    @property
+    def url_root(self) -> str:
+        return f"hf://datasets/{self.repo_id}"
+
     @property
     def _version(self) -> packaging.version.Version:
         """Codebase version used to create this dataset."""