docs(readme): document license and reuse

README.md

@@ -65,3 +65,14 @@ pre-commit install
 ```
 
 Also, a helper with conventional commits is installed with the development requirements that you could leverage to easily comply with it. Just use `cz c` instead of `git commit`
+
+## License
+
+This project aims to be [REUSE compliant](https://api.reuse.software/info/gitlab.gwdg.de/dariah-de/textgridrep/repdav).
+Original parts are licensed under AGPL-3.0-or-later.
+Derivative code is licensed under the respective license of the original.
+Documentation, configuration and generated code files are licensed under CC0-1.0.
+
+## Badges
+
+[![REUSE status](https://api.reuse.software/badge/gitlab.gwdg.de/dariah-de/textgridrep/repdav)](https://api.reuse.software/info/gitlab.gwdg.de/dariah-de/textgridrep/repdav)