Determine client info on insert rather than on retrieve for speed improvements.

i suppose device detect only ever expects to analyse a single string at once given its made for matomo so it on the slower side for multiple dingusses

public/index.php

@@ -2,7 +2,9 @@
 namespace Misuzu;
 
 use Misuzu\Users\User;
+use Misuzu\Users\UserNotFoundException;
 use Misuzu\Users\UserSession;
+use Misuzu\Users\UserSessionNotFoundException;
 
 require_once __DIR__ . '/../misuzu.php';