feat: Add delivery status for Twilio Channel (#8082)

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

config/locales/en.yml

@@ -126,6 +126,8 @@ en:
       instagram_story_content: "%{story_sender} mentioned you in the story: "
       instagram_deleted_story_content: This story is no longer available.
       deleted: This message was deleted
+      delivery_status:
+        error_code: "Error code: %{error_code}"
     activity:
       status:
         resolved: "Conversation was marked resolved by %{user_name}"

config/routes.rb

@@ -396,6 +396,7 @@ Rails.application.routes.draw do
 
   namespace :twilio do
     resources :callback, only: [:create]
+    resources :delivery_status, only: [:create]
   end
 
   get 'microsoft/callback', to: 'microsoft/callbacks#show'