Function add_or_lookup_key_contacts_by_address_list

async fn add_or_lookup_key_contacts_by_address_list(
    context: &Context,
    address_list: &[SingleInfo],
    gossiped_keys: &HashMap<String, SignedPublicKey>,
    fingerprints: &[Fingerprint],
    origin: Origin,
) -> Result<Vec<Option<ContactId>>>

Looks up contact IDs from the database given the list of recipients.