Missing License File #167
Description
According to https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/licensing-a-repository#choosing-the-right-license Sunray is not Open Source:
You're under no obligation to choose a license. However, without a license, the default copyright laws apply, meaning that you retain all rights to your source code and no one may reproduce, distribute, or create derivative works from your work. If you're creating an open source project, we strongly encourage you to include an open source license. The Open Source Guide provides additional guidance on choosing the correct license for your project.
However, according to https://www.ardumower.de which links to the GitHub organization, this project is open source.
Please, include a LICENSE file so that others can reason about the status. https://choosealicense.com/ should help to pick one license.