Ingesting datasets docs (#2304)
* ingesting datasets
* Apply suggestions from code review
Co-authored-by: Pedro Cuenca <pedro@huggingface.co>
Co-authored-by: Daniel van Strien <davanstrien@users.noreply.github.com>
* common intro in scheduled ingestion and buckets section
* add ready-to-go dlt example
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Co-authored-by: Pedro Cuenca <pedro@huggingface.co>
Co-authored-by: Daniel van Strien <davanstrien@users.noreply.github.com>
