Added Chinese language support (i18n)

app/controllers/accounts_controller.rb

@@ -9,7 +9,8 @@ class AccountsController < ApplicationController
     'pt-PT' => 'Português',
     'de-DE' => 'Deutsch',
     'it-IT' => 'Italiano',
-    'nl-NL' => 'Nederlands'
+    'nl-NL' => 'Nederlands',
+    'zh-TW' => '繁體中文'
   }.freeze
 
   before_action :load_account

config/application.rb

@@ -26,7 +26,7 @@ module DocuSeal
     config.active_storage.draw_routes = ENV['MULTITENANT'] != 'true'
 
     config.i18n.available_locales = %i[en en-US en-GB es-ES fr-FR pt-PT de-DE it-IT nl-NL
-                                       es it de fr nl pl uk cs pt he ar ko ja]
+                                       es it de fr nl pl uk cs pt he ar ko ja zh-TW]
     config.i18n.fallbacks = [:en]
 
     config.exceptions_app = ->(env) { ErrorsController.action(:show).call(env) }