Rename vars for clarity

Also filter episode_id correctly in main

Break out the dataset_conversion pieces

Rename example to rerun_example_huggingface

Explain what is LeRobot-specific

Better instructions

More general support for any HuggingFace dataset, with streaming

Fix typo

Make it easy to log any HuggingFace dataset

Log any and all columns of the dataset

Log more parts of the dataframe

Add code to download dataset and visualize with Rerun