Draft: [IMP] Acces rights & Ruff
- Created new group "Gestion des sessions & séances"
- Access right for this group have been set up so only members from this group can CRUD event sessions
- Access right for all other users (out side of the group) have been downgraded to only read access of event and event sessions
- Session related fields have been set invisible and a new button has apperead to turn enable/disable event session type
- Replaced flake8 and black with Ruff in the pre-commit file