feat: add Filament packages for enhanced admin functionality

- Add backstage/filament-mails for mail management interface
  - Add binarybuilds/filament-failed-jobs for failed job monitoring
  - Add gboquizosanchez/filament-log-viewer for application log viewing
  - Add jacobtims/filament-logger for enhanced logging capabilities
  - Extend Filament admin panel with comprehensive monitoring tools
  - Improve developer experience with better visibility into system operations

resources/lang/vendor/filament-logger/sk/filament-logger.php

@@ -0,0 +1,31 @@
+<?php
+
+return [
+
+    /*
+    |--------------------------------------------------------------------------
+    | Navigácia & Zdroje
+    |--------------------------------------------------------------------------
+    */
+
+    'nav.group' => 'Nastavenia',
+    'nav.log.label' => 'Záznam aktivity',
+    'nav.log.icon' => 'heroicon-o-clipboard-document-list',
+    'resource.label.log' => 'Záznam aktivity',
+    'resource.label.logs' => 'Záznamy aktivity',
+    'resource.label.user' => 'Používateľ',
+    'resource.label.subject' => 'Predmet',
+    'resource.label.subject_type' => 'Typ predmetu',
+    'resource.label.description' => 'Popis',
+    'resource.label.type' => 'Typ',
+    'resource.label.event' => 'Udalosť',
+    'resource.label.logged_at' => 'Zaznamenané',
+    'resource.label.properties' => 'Vlastnosti',
+    'resource.label.old' => 'Starý',
+    'resource.label.new' => 'Nový',
+    'resource.label.old_value' => 'Stará hodnota',
+    'resource.label.new_value' => 'Nová hodnota',
+    'resource.label.properties_hint' => 'Môže byť kľúč alebo hodnota',
+    'resource.label.old_attributes' => 'Starý atribút alebo hodnota: ',
+    'resource.label.new_attributes' => 'Nový atribút alebo hodnota: ',
+];