missing license information

[msladecek]

Hi, could you please add a license to this project?
When no license is specified you're retaining all rights related to the project, and others cannot extend, redistribute or derive other works from it [1].

If you wish to retain all rights related to your project, then that's totally fine of course, but it would be helpful if you made it explicit

[1] https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/licensing-a-repository#choosing-the-right-license