adjust templates, add timezone and locale

db/migrate/20230515182743_create_accounts.rb

@@ -4,6 +4,8 @@ class CreateAccounts < ActiveRecord::Migration[7.0]
   def change
     create_table :accounts do |t|
       t.string :name, null: false
+      t.string :timezone, null: false
+      t.string :locale, null: false
 
       t.timestamps
     end