Update LICENSE to AGPL-3.0

[glenn-jocher]

This pull request updates the license of the YOLOv5 project from GNU General Public License v3.0 (GPL-3.0) to GNU Affero General Public License v3.0 (AGPL-3.0).

We at Ultralytics have decided to make this change in order to better protect our intellectual property and ensure that any larger work that incorporates YOLOv5 and is provided as a service over a network will also be open-sourced under AGPL-3.0.

AGPL-3.0 is very similar to GPL-3.0, but with an additional clause to address the use of software over a network. This change ensures that if someone uses YOLOv5 as part of a larger work and provides that larger work as a service over a network (e.g., through a web application or API), they must also make the source code of the larger work available to users of the service under the AGPL-3.0 license.

This update includes the following changes:

• Replace the LICENSE file with the AGPL-3.0 license text
• Update the license reference in the README.md file
• Update the license headers in source code files

We believe that this change will promote a more collaborative environment and help drive further innovation within the YOLOv5 community.

🤖 Generated by Copilot at eb337c5

Summary

🕸️🔄📝

The pull request updates the license of the project to ensure the availability of the source code of web applications that use the software. It changes the ./LICENSE file from GPL to AGPL and explains how they relate to other GNU licenses.

Sing, O Muse, of the noble and wise pull request
That changed the ./LICENSE file with skill and zest
From the GPL, the great protector of freedom's flame
To the AGPL, the stricter guardian of the same

Walkthrough

• Change the license from GNU General Public License to GNU Affero General Public License, which requires sharing the source code of web applications that use the covered work (link, link, link, link, link, link)

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Update to the AGPL-3.0 license across multiple files for the Ultralytics YOLOv5 repository.

📊 Key Changes

• Changed the license from GPL-3.0 to AGPL-3.0 in the CITATION.cff, CONTRIBUTING.md, LICENSE, and various documentation files.
• Updated GitHub workflow and action names in CI configuration files.
• Revised multiple YOLO model configuration files and code comment headers for consistency and clarity.

🎯 Purpose & Impact

• 📝 Licensing: Shifting from GPL-3.0 to AGPL-3.0 indicates stronger copyleft provisions, especially in network use cases, which could affect how the software is used and distributed.
• 🛠️ Workflow Cleanup: Adjustments to workflow files are likely for housekeeping purposes to maintain the CI/CD pipeline.
• 🧹 Codebase Consistency: Changing headers and model configs shows an effort to keep the codebase clean and understandable.

📌 Note: No functional changes to the code seem to be introduced; these changes are primarily administrative and cosmetic.