Configure multilingual support

- Add French language configuration (default)
- Add English language configuration
- Enable IntlDateFormatter for date localization (date.handler: intl)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

site/config/config.php

@@ -2,7 +2,7 @@
 
 return [
   'debug' => true,
-  'locale' => 'fr_FR.UTF-8',
+  'languages' => true,
   'date.handler'  => 'intl',
   'thumbs' => [
     'quality' => 80,

site/languages/en.php

@@ -0,0 +1,8 @@
+<?php
+return [                                                                                                            
+  'code'      => 'en',
+  'default'   => false,
+  'direction' => 'ltr',
+  'locale'    => 'en_US.UTF-8',
+  'name'      => 'English',
+];

site/languages/fr.php

@@ -0,0 +1,9 @@
+<?php
+
+return [
+  'code'      => 'fr',
+  'default'   => true,
+  'direction' => 'ltr',
+  'locale'    => 'fr_FR.UTF-8',
+  'name'      => 'Français',
+];