Update localization files for backup destinations and API client credentials

- Changed references from E3 to S3 in Russian, Simplified Chinese, and Traditional Chinese localization files.
- Updated the corresponding keys and descriptions to reflect the change in backup destination protocols.
- Improved the Vite configuration to dynamically match locale files, simplifying the code for locale handling.

webapp/src/lib/api/backup.ts

@@ -6,7 +6,7 @@ import type {
   BackupRuntimeState,
   BackupScheduleConfig,
   BackupSettings as AdminBackupSettings,
-  E3BackupDestination,
+  S3BackupDestination,
   WebDavBackupDestination,
 } from '@shared/backup-schema';
 import {
@@ -26,7 +26,7 @@ export type {
   BackupRuntimeState,
   BackupScheduleConfig,
   AdminBackupSettings,
-  E3BackupDestination,
+  S3BackupDestination,
   WebDavBackupDestination,
 };