chore: Add attachments key to message_created webhook payload (#5659)

- Add attachments key to `message_created` webhook payload

app/models/message.rb

@@ -116,7 +116,7 @@ class Message < ApplicationRecord
   end
 
   def webhook_data
-    {
+    data = {
       account: account.webhook_data,
       additional_attributes: additional_attributes,
       content_attributes: content_attributes,
@@ -131,6 +131,8 @@ class Message < ApplicationRecord
       sender: sender.try(:webhook_data),
       source_id: source_id
     }
+    data.merge!(attachments: attachments.map(&:push_event_data)) if attachments.present?
+    data
   end
 
   def content

app/models/webhook.rb

@@ -5,7 +5,7 @@
 #  id            :bigint           not null, primary key
 #  subscriptions :jsonb
 #  url           :string
-#  webhook_type  :integer          default("account")
+#  webhook_type  :integer          default("account_type")
 #  created_at    :datetime         not null
 #  updated_at    :datetime         not null
 #  account_id    :integer
@@ -23,7 +23,7 @@ class Webhook < ApplicationRecord
   validates :account_id, presence: true
   validates :url, uniqueness: { scope: [:account_id] }, format: URI::DEFAULT_PARSER.make_regexp(%w[http https])
   validate :validate_webhook_subscriptions
-  enum webhook_type: { account: 0, inbox: 1 }
+  enum webhook_type: { account_type: 0, inbox_type: 1 }
 
   ALLOWED_WEBHOOK_EVENTS = %w[conversation_status_changed conversation_updated conversation_created message_created message_updated
                               webwidget_triggered].freeze