storage: Load with less joins

This is done to simplify some queries, to avoid loading more data than
necessary, and in preparation of a proper cache layer

crates/data-model/src/oauth2/session.rs

@@ -16,13 +16,10 @@ use oauth2_types::scope::Scope;
 use serde::Serialize;
 use ulid::Ulid;
 
-use super::client::Client;
-use crate::users::BrowserSession;
-
 #[derive(Debug, Clone, PartialEq, Eq, Serialize)]
 pub struct Session {
     pub id: Ulid,
-    pub browser_session: BrowserSession,
-    pub client: Client,
+    pub user_session_id: Ulid,
+    pub client_id: Ulid,
     pub scope: Scope,
 }