authors: initial release
- Initial module structure.
- Introduces SQLAlchemy models for Publication, Author, Signature and Citation.
- Introduces claiming operations on signatures.
- Adds citation association table.
- Tests for models.
Signed-off-by: Artem Tsikiridis <artem.tsikiridis@cern.ch>
Co-authored-by: Gilles Louppe <gilles.louppe@cern.ch>
Co-authored-by: Mateusz Susik <mateusz.susik@cern.ch>
Co-authored-by: Evangelos Tzemis <evangelos.tzemis@cern.ch>