Implement internationalization (i18n) system for LoRA Manager

- Added i18n support with automatic language detection based on browser settings.
- Implemented translations for English (en) and Simplified Chinese (zh-CN).
- Created utility functions for text replacement in HTML templates and JavaScript.
- Developed a comprehensive translation key structure for various application components.
- Added formatting functions for numbers, dates, and file sizes according to locale.
- Included RTL language support and dynamic updates for DOM elements.
- Created tests to verify the functionality of the i18n system.

static/js/loras.js

@@ -5,6 +5,7 @@ import { LoraContextMenu } from './components/ContextMenu/index.js';
 import { createPageControls } from './components/controls/index.js';
 import { confirmDelete, closeDeleteModal, confirmExclude, closeExcludeModal } from './utils/modalUtils.js';
 import { ModelDuplicatesManager } from './components/ModelDuplicatesManager.js';
+import { initializePageI18n } from './utils/i18nHelpers.js';
 
 // Initialize the LoRA page
 class LoraPageManager {
@@ -45,6 +46,9 @@ class LoraPageManager {
         
         // Initialize common page features (virtual scroll)
         appCore.initializePageFeatures();
+        
+        // Initialize i18n for the page
+        initializePageI18n();
     }
 }