add reverb container, unread attribute in notification pivot table and private channel and event for new register

routes/channels.php

@@ -0,0 +1,10 @@
+<?php
+
+use Illuminate\Support\Facades\Broadcast;
+
+
+Broadcast::channel('admins-private', function ($user) {
+    return in_array($user->role, [1, 2]);
+});
+
+