scaffold auth api infrastructure (doesn't work)

api/src/Services/UserService.cs

@@ -21,6 +21,10 @@ public class UserService {
         return await db_.Users.FindAsync(id);
     }
 
+    public async Task<User?> Get(string username) {
+        return await db_.Users.FirstOrDefaultAsync(u => u.Name == username);
+    }
+
     public async Task<User> Create(User user) {
         db_.Users.Add(user);
         await db_.SaveChangesAsync();