Move webhook to project notification type

app/Model/ProjectNotification.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace Kanboard\Model;
+
+/**
+ * Project Notification
+ *
+ * @package  model
+ * @author   Frederic Guillot
+ */
+class ProjectNotification extends Base
+{
+    /**
+     * Send notifications
+     *
+     * @access public
+     * @param  integer  $project_id
+     * @param  string   $event_name
+     * @param  array    $event_data
+     */
+    public function sendNotifications($project_id, $event_name, array $event_data)
+    {
+        $project = $this->project->getById($project_id);
+
+        foreach ($this->projectNotificationType->getSelectedTypes($project_id) as $type) {
+            $this->projectNotificationType->getType($type)->notifyProject($project, $event_name, $event_data);
+        }
+    }
+}