feat: Use display_name instead of name of the agent (#1097)

* feat: Use display_name instead of name of the agent

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

@@ -2,6 +2,7 @@ json.account_id resource.account.id
 json.availability_status resource.availability_status
 json.confirmed resource.confirmed?
 json.email resource.email
+json.available_name resource.available_name
 json.id resource.id
 json.name resource.name
 json.role resource.role