feat: LanguageManager 添加 5 种新语言选项

在设置页面的语言下拉菜单中添加:
- Español (西班牙语)
- العربية (阿拉伯语)
- Français (法语)
- 日本語 (日语)
- 한국어 (韩语)

用户现在可以在应用内直接切换到这些语言。

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

to-live-photo/to-live-photo/LanguageManager.swift

@@ -10,24 +10,39 @@ final class LanguageManager {
         case zhHans = "zh-Hans"
         case zhHant = "zh-Hant"
         case en = "en"
-        
+        case es = "es"
+        case ar = "ar"
+        case fr = "fr"
+        case ja = "ja"
+        case ko = "ko"
+
         var id: String { rawValue }
-        
+
         var displayName: String {
             switch self {
             case .system: return "跟随系统"
             case .zhHans: return "简体中文"
             case .zhHant: return "繁體中文"
             case .en: return "English"
+            case .es: return "Español"
+            case .ar: return "العربية"
+            case .fr: return "Français"
+            case .ja: return "日本語"
+            case .ko: return "한국어"
             }
         }
-        
+
         var locale: Locale? {
             switch self {
             case .system: return nil
             case .zhHans: return Locale(identifier: "zh-Hans")
             case .zhHant: return Locale(identifier: "zh-Hant")
             case .en: return Locale(identifier: "en")
+            case .es: return Locale(identifier: "es")
+            case .ar: return Locale(identifier: "ar")
+            case .fr: return Locale(identifier: "fr")
+            case .ja: return Locale(identifier: "ja")
+            case .ko: return Locale(identifier: "ko")
             }
         }
     }