Add ultralytics pip package

[glenn-jocher]

@kalenmike @AyushExel adding ultralytics to Docker images and commented in requirements.txt

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Update to YOLOv5's Python package requirements and Docker build configurations.

📊 Key Changes

• Added ipython, psutil, and thop to requirements, improving interactive sessions, resource monitoring, and performance computation.
• Organized the requirements sections (base, logging, plotting, export, deploy, extras) for better readability.
• Integrated ultralytics official package in Dockerfiles to facilitate better integration with Ultralytics' HUB services.
• Ensured Pillow version compatibility by specifying it should be at least version 9.1.0.
• Limited opencv-python version in Docker to prevent using versions beyond 4.5.4.68 due to potential compatibility issues.

🎯 Purpose & Impact

• Enriches the development environment with tools for interactive testing (🔍) and system performance tracking (🏎️).
• Categorization of the requirements.txt makes dependency management more intuitive and maintainable (🛠️).
• Dockerfile updates foster a more standardized development and deployment process by utilizing official Ultralytics packages (📦).
• Pillow and OpenCV version specifications safeguard against issues that may arise from future updates that are incompatible with YOLOv5 (🛡️).