Add source code for DataLoader Animation

[muellerzr]

What does this PR do?

Adds source code for the new manim animation going live on 4/23/2024

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• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
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@SunMarc

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.