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/mod.rs

@@ -3,16 +3,13 @@ pub mod action_logger;
 pub mod app_config;
 pub mod client;
 pub mod code_challenge;
-pub mod crypto_wrapper;
 pub mod current_user;
 pub mod entity_manager;
 pub mod id_token;
 pub mod jwt_signer;
 pub mod login_redirect;
-pub mod openid_primitive;
 pub mod provider;
 pub mod provider_configuration;
-pub mod remote_ip;
 pub mod session_identity;
 pub mod totp_key;
 pub mod user;