docs: add assets for docs hub datasets

[sergiuwaxmann]

@glenn-jocher This PR adds the required assets for Ultralytics HUB Datasets Docs.

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Visual guide enhancements for dataset management in Ultralytics Hub.

📊 Key Changes

• Added new visual aids for the dataset deletion process (hub_delete_dataset_1.jpg, hub_delete_dataset_2.jpg, hub_delete_dataset_3.jpg).
• Introduced images to illustrate the dataset editing workflow (hub_edit_dataset_1.jpg, hub_edit_dataset_2.jpg, hub_edit_dataset_3.jpg).
• Uploaded step-by-step images for sharing datasets on the Hub (hub_share_dataset_1.jpg to hub_share_dataset_4.jpg).
• Provided a series of new images detailing the dataset upload procedure (hub_upload_dataset_1.jpg to hub_upload_dataset_11.jpg).

🎯 Purpose & Impact

• 🤝 Enhanced user guidance: The new images provide a visual step-by-step guide to assist users in managing datasets, making the Hub more user-friendly.
• 📈 Increased usability: By simplifying complex processes with visuals, users are less likely to encounter difficulties when deleting, editing, sharing, or uploading datasets.
• 🌐 Broader accessibility: Even users not fluent in the platform's language can follow visual cues to manage datasets, broadening the platform's accessibility.

[glenn-jocher]

@sergiuwaxmann looks good!