Add extra info to dataset card, various fixes from Remi's review

lerobot/common/datasets/v2/convert_dataset_v1_to_v2.py

@@ -213,8 +213,11 @@ def get_features_from_hf_dataset(dataset: Dataset, robot_config: dict | None = N
             assert isinstance(ft.feature, datasets.Value)
             dtype = ft.feature.dtype
             shape = (ft.length,)
-            names = robot_config["names"][key] if robot_config else [f"motor_{i}" for i in range(ft.length)]
-            assert len(names) == shape[0]
+            motor_names = (
+                robot_config["names"][key] if robot_config else [f"motor_{i}" for i in range(ft.length)]
+            )
+            assert len(motor_names) == shape[0]
+            names = {"motors": motor_names}
         elif isinstance(ft, datasets.Image):
             dtype = "image"
             image = dataset[0][key]  # Assuming first row
@@ -433,6 +436,9 @@ def convert_dataset(
     tasks_path: Path | None = None,
     tasks_col: Path | None = None,
     robot_config: dict | None = None,
+    license: str | None = None,
+    citation: str | None = None,
+    arxiv: str | None = None,
     test_branch: str | None = None,
 ):
     v1 = get_hub_safe_version(repo_id, V16, enforce_v2=False)
@@ -559,7 +565,9 @@ def convert_dataset(
     }
     write_json(metadata_v2_0, v20_dir / INFO_PATH)
     convert_stats_to_json(v1x_dir, v20_dir)
-    card = create_lerobot_dataset_card(tags=repo_tags, info=metadata_v2_0)
+    card = create_lerobot_dataset_card(
+        tags=repo_tags, info=metadata_v2_0, license=license, citation=citation, arxiv=arxiv
+    )
 
     with contextlib.suppress(EntryNotFoundError):
         hub_api.delete_folder(repo_id=repo_id, path_in_repo="data", repo_type="dataset", revision=branch)
@@ -634,6 +642,12 @@ def main():
         default=None,
         help="Local directory to store the dataset during conversion. Defaults to /tmp/lerobot_dataset_v2",
     )
+    parser.add_argument(
+        "--license",
+        type=str,
+        default="mit",
+        help="Repo license. Must be one of https://huggingface.co/docs/hub/repositories-licenses. Defaults to mit.",
+    )
     parser.add_argument(
         "--test-branch",
         type=str,
@@ -652,7 +666,4 @@ def main():
 
 
 if __name__ == "__main__":
-    from time import sleep
-
-    sleep(1)
     main()