Add load_chat documentation (#10669)
* changes
* add changeset
* Update js/_website/src/lib/templates/gradio/04_helpers/load_chat.svx
Co-authored-by: Abubakar Abid <abubakar@huggingface.co>
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Co-authored-by: Ali Abid <aliabid94@gmail.com>
Co-authored-by: gradio-pr-bot <gradio-pr-bot@users.noreply.github.com>
Co-authored-by: Abubakar Abid <abubakar@huggingface.co>
