Add Ultralytics platform banners

[RizwanMunawar]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Adds new Ultralytics Platform banner assets and updates existing YOLOv8 banner images for promotional and branding use. 🎨🚀

📊 Key Changes

• Added new banner assets for the Ultralytics Platform.
• Updated existing yolov8/banner-vertical-yolov8.png asset.
• Updated existing yolov8/banner-yolov8.png asset.
• Expanded repository image assets to support platform-related visuals and announcements.

🎯 Purpose & Impact

• Improves availability of ready-to-use marketing and branding graphics for the Ultralytics Platform. 📣
• Helps maintain consistent visual presentation across docs, announcements, and community channels.
• Refreshes existing banner assets to better align with current branding and promotional needs.

📋 Skipped 2 files (lock files, generated, images, etc.)

• yolov8/banner-vertical-yolov8.png
• yolov8/banner-yolov8.png

[UltralyticsAssistant]

👋 Hello @RizwanMunawar, thank you for submitting a ultralytics/assets 🚀 PR! This is an automated message to help streamline review, and an engineer will assist you shortly. Please review the checklist below to help ensure a smooth integration. 😊

• ✅ Define a Purpose: Clearly explain the purpose of your fix or feature in your PR description, and link to any relevant issues. Ensure your commit messages are clear, concise, and adhere to the project's conventions.
• ✅ Synchronize with Source: Confirm your PR is synchronized with the ultralytics/assets main branch. If it's behind, update it by clicking the 'Update branch' button or by running git pull and git merge main locally.
• ✅ Ensure CI Checks Pass: Verify all Ultralytics Continuous Integration (CI) checks are passing. If any checks fail, please address the issues.
• ✅ Update Documentation: Update the relevant documentation for any new or modified features.
• ✅ Add Tests: If applicable, include or update tests to cover your changes, and confirm that all tests are passing.
• ✅ Sign the CLA: Please ensure you have signed our Contributor License Agreement if this is your first Ultralytics PR by writing "I have read the CLA Document and I sign the CLA" in a new message.
• ✅ Minimize Changes: Limit your changes to the minimum necessary for your bug fix or feature addition. "It is not daily increase but daily decrease, hack away the unessential. The closer to the source, the less wastage there is." — Bruce Lee

For more guidance, please refer to our Contributing Guide. Don't hesitate to leave a comment if you have any questions. Thank you for contributing to Ultralytics! 🚀

[UltralyticsAssistant]

🔍 PR Review

_{Made with ❤️ by Ultralytics Actions}

All 2 changed files are generated/vendored (skipped review)

📋 Skipped 2 files (lock files, generated, images, etc.)

• yolov8/banner-vertical-yolov8.png
• yolov8/banner-yolov8.png

[pderrenger]

Thanks for the update—please keep the new assets aligned with the current brand guide, especially using “Ultralytics Platform” and the approved YOLO naming; see the Ultralytics Brand for reference.