Docs: Update HUB images

[sergiuwaxmann]

This PR updates the images used in the HUB Docs.

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Enhancements and updates to Ultralytics documentation visuals. 🎉

📊 Key Changes

• New Visuals Added: Fresh screenshots for cloud training, dataset management, model analysis, training models, hub pro account upgrades, model comparison, project creation and management, and quickstart guides have been introduced. 🖼️
• Updated Screenshots: Many existing documentation images have been updated to reflect the latest UI/UX changes. 🔍
• Streamlined Content: A few outdated images have been removed, ensuring the documentation is up-to-date. 🗑️

🎯 Purpose & Impact

• Improved Clarity: The addition and refresh of screenshots aim to make tutorials and guides clearer, helping both new and existing users better navigate and utilize Ultralytics' features. 🧭
• Enhanced User Experience: By keeping the documentation visuals current, users can have a smoother and less confusing experience when following along, potentially decreasing learning curves and improving onboardings. 👨‍💻👩‍💻
• Updated Information: The removal of outdated images and inclusion of new ones ensure that users are receiving the most current information, thereby supporting best practices in utilizing Ultralytics' platform. 📈

These changes collectively work towards making the user's journey through Ultralytics' documentation more informative, enjoyable, and efficient.