add RateLimiter facade alias (#5642)

config/app.php

@@ -215,6 +215,7 @@
         'Notification' => Illuminate\Support\Facades\Notification::class,
         'Password' => Illuminate\Support\Facades\Password::class,
         'Queue' => Illuminate\Support\Facades\Queue::class,
+        'RateLimiter' => Illuminate\Support\Facades\RateLimiter::class,
         'Redirect' => Illuminate\Support\Facades\Redirect::class,
         // 'Redis' => Illuminate\Support\Facades\Redis::class,
         'Request' => Illuminate\Support\Facades\Request::class,