Added MSCOCO API installation command to requirements.txt

[sowndappan5]

Added the MSCOCO API installation command to the requirements.txt for better detection performance

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Update dependencies to include Cython and cocoapi for improved functionality.

📊 Key Changes

• Added Cython>=0.29.36 to requirements.txt.
• Included cocoapi from GitHub for MSCOCO support.

🎯 Purpose & Impact

• 🛠 Enhanced Functionality: Cython and cocoapi enable more efficient handling of COCO datasets.
• 📈 Improved COCO Support: Facilitates better integration and performance when working with COCO annotations.

[github-actions]

All Contributors have signed the CLA. ✅
_{Posted by the CLA Assistant Lite bot.}

[UltralyticsAssistant]

👋 Hello @sowndappan5, thank you for submitting an ultralytics/yolov5 🚀 PR! This is an automated response to guide you through our contribution process. An Ultralytics engineer will review your submission shortly. Meanwhile, please ensure your PR aligns with the checklist below:

• ✅ Purpose Clarification: Clearly define the purpose of adding the MSCOCO API installation command in the PR description, and link any relevant issues you may be addressing.
• ✅ Branch Synchronization: Confirm your PR is up-to-date with the main branch. If updates are needed, click 'Update branch' or run git pull and git merge main locally.
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[sowndappan5]

All Contributors have signed the CLA. ✅Posted by the CLA Assistant Lite bot.

[pderrenger]

@sowndappan5 thank you for confirming the CLA. If you have any questions or need further assistance, feel free to ask!