Add discord emotes

[glenn-jocher]

copilot:all

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

New Discord emote logos added to the Ultralytics brand assets.

📊 Key Changes

• Introduced emote-Ultralytics_HUB_Logomark_Original.png, a new original emote for Ultralytics HUB.
• Added emote-Ultralytics_HUB_Logomark_Reverse.png, a reverse-color version of the Ultralytics HUB emote.
• Included emote-Ultralytics_YOLO_Logomark.png, an original YOLO-style logomark for emote use.
• Created emote-Ultralytics_YOLO_Logomark_Reverse.png, a reverse-color YOLO logomark for emote purposes.

🎯 Purpose & Impact

• Enhances community engagement by providing branded emotes for use on Discord.
• Offers a fun way for users to represent and promote Ultralytics within the Discord community.
• Enables brand consistency across digital platforms with visually appealing emote designs.
• Expands the company's visual identity with emotes, potentially increasing brand recognition and loyalty.