feat: Implement even more endpoints

backend/src/security/auth.ts

@@ -35,6 +35,7 @@ export async function performLogin(username: string, password: string, db: Db):
             classId: user.classId,
 
             lastReview: user.lastReview,
+            lastLevel: user.lastLevel,
 
             // TODO: Implement
             score: 4,