chore: Automate conversation display_id generation with db triggers (#1412)

Automate conversation display_id generation with db triggers

Co-authored-by: Saurabh Mehta <saurabh1.mehta@airtel.com>
Co-authored-by: Sojan Jose <sojan@pepalo.com>

app/models/account.rb

@@ -91,4 +91,8 @@ class Account < ApplicationRecord
   def notify_creation
     Rails.configuration.dispatcher.dispatch(ACCOUNT_CREATED, Time.zone.now, account: self)
   end
+
+  trigger.after(:insert).for_each(:row) do
+    "execute format('create sequence IF NOT EXISTS conv_dpid_seq_%s', NEW.id);"
+  end
 end