Refactor dependencies to reduce code base size (#111)

Use crates to reduce code base size :

* `actix-remote-ip` to safely determine user IP location
* `light-openid` for the OpenID primitives & as client to handle federation

Reviewed-on: #111

src/data/action_logger.rs

@@ -4,6 +4,7 @@ use std::pin::Pin;
 
 use actix::Addr;
 use actix_identity::Identity;
+use actix_remote_ip::RemoteIP;
 use actix_web::dev::Payload;
 use actix_web::{web, Error, FromRequest, HttpRequest};
 
@@ -12,7 +13,7 @@ use crate::actors::users_actor;
 use crate::actors::users_actor::{AuthorizedAuthenticationSources, UsersActor};
 use crate::data::client::Client;
 use crate::data::provider::{Provider, ProviderID};
-use crate::data::remote_ip::RemoteIP;
+
 use crate::data::session_identity::SessionIdentity;
 use crate::data::user::{FactorID, GrantedClients, TwoFactor, User, UserID};