feat: Add support for Instagram delivery reports (#8125)

app/services/instagram/read_status_service.rb

@@ -0,0 +1,28 @@
+class Instagram::ReadStatusService
+  pattr_initialize [:params!]
+
+  def perform
+    return if instagram_channel.blank?
+
+    process_status if message.present?
+  end
+
+  def process_status
+    @message.status = 'read'
+    @message.save!
+  end
+
+  def instagram_id
+    params[:recipient][:id]
+  end
+
+  def instagram_channel
+    @instagram_channel ||= Channel::FacebookPage.find_by(instagram_id: instagram_id)
+  end
+
+  def message
+    return unless params[:read][:mid]
+
+    @message ||= @instagram_channel.inbox.messages.find_by(source_id: params[:read][:mid])
+  end
+end