Restructure omni services and add Chatwoot research snapshot

research/chatwoot/app/jobs/notification/email_notification_job.rb

@@ -0,0 +1,10 @@
+class Notification::EmailNotificationJob < ApplicationJob
+  queue_as :default
+
+  def perform(notification)
+    # no need to send email if notification has been read already
+    return if notification.read_at.present?
+
+    Notification::EmailNotificationService.new(notification: notification).perform
+  end
+end