describe the single-tar layout

drop loose data/ - superseded by robodojo_lerobot.tar

drop loose meta/ - superseded by robodojo_lerobot.tar

drop loose videos/ - superseded by robodojo_lerobot.tar

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Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

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initial commit