Update and add benchmarks to ci-testing.yml

[glenn-jocher]

Improved YOLOv5 CI with benchmarks and Python 3.7, 3.8, 3.9, 3.10 tests.

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Updates to YOLOv5 Continuous Integration (CI) to enhance testing and benchmarking.

📊 Key Changes

• CI Workflow Renamed: The CI workflow name changed from 'CI CPU testing' to 'YOLOv5 CI'.
• Expanded Platform Testing: It now includes multiple Python versions (3.7-3.10) on Ubuntu-latest.
• Benchmarks Job Added: A new job to run benchmarks on model performance using different setups.
• Refactored Testing Steps: Improved cache retrieval for pip and updated package installation, including additional packages like coremltools, onnxruntime, and TensorFlow CPU.
• Added Environment Check: A new step to check the environment and provide debug information.

🎯 Purpose & Impact

• Better Platform Coverage: Testing across multiple Python versions ensures greater compatibility.
• Performance Insights: The benchmarking job will provide insights into the model's performance, which can drive optimizations.
• Efficient CI Runs: CI pipeline enhancements and better caching may reduce test runtimes, leading to quicker feedback for developers.
• Enhanced Reliability and Debugging: The added environment check step could make debugging the CI workflow more straightforward for maintainers.

🚀 These CI improvements aim to streamline the development process and ensure that YOLOv5 maintains high performance and compatibility across various systems and Python versions.