Prepare for open-sourcing
The log-schema project is going to be open-sourced to allow CESSDA and other interested parties to use, contribute to, or fork the project. We should perhaps move the project to a separate GitLab group (for example logging) and make the group public. Supporting project's should be moved to the same group so that logging-related projects and tools are centralized in one location.
A License should be added to the project. I suggest using the MIT license.