Add a new Persona to the PersonaStore.
See Folks.PersonaStore.add_persona_from_details.
This method is safe to call multiple times concurrently for the same (or different) contact IDs (assuming Telepathy is safe).
| Folks.PersonaStoreError.INVALID_ARGUMENT |
if the |
| Folks.PersonaStoreError.STORE_OFFLINE |
if the CM is offline |
| Folks.PersonaStoreError.CREATE_FAILED |
if adding the contact failed |