fix: Manage Twilio SMS channel via inbox API (#11457)

- Currently Chatwoot manages Twilio Inbox creation in a separate
controller , We want to move this to inboxes api so that we have a
unified API for inbox related changes

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Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

app/views/api/v1/models/_inbox.json.jbuilder

@@ -62,6 +62,10 @@ json.instagram_id resource.channel.try(:instagram_id) if resource.instagram?
 json.messaging_service_sid resource.channel.try(:messaging_service_sid)
 json.phone_number resource.channel.try(:phone_number)
 json.medium resource.channel.try(:medium) if resource.twilio?
+if resource.twilio? && Current.account_user&.administrator?
+  json.auth_token resource.channel.try(:auth_token)
+  json.account_sid resource.channel.try(:account_sid)
+end
 
 if resource.email?
   ## Email Channel Attributes