License

[christian-weiss]

At the moment we force all committers to use git commit -s (to sign-off commits).
This is enforced by pipeline step DCO (Developer Certificate of Origin).

By using the git sign-off feature a line will be added to the end of the commit message, which is prefixed with Sign-off by:.
With that line the commiter confirms that he/she is allowed to commit this code to this project under a license that is compatible/equal to the license we use in this project.

Problem is, that this project do not have a license file, so we should drop this DCO-check or add a license file to this project.

[andibraeu]

done

[christian-weiss]

i added a direct link to our new license file (no external references anymore) and also some contribution notes (about sign-off)