feat(backup): Add backup system: BackupManager, DB schema, API endpoints and UI support

Introduce a complete service backup/restore subsystem with encrypted archives, database records and REST endpoints. Implements BackupManager with export/import for service config, platform resources (MongoDB, MinIO, ClickHouse), and Docker images; adds BackupRepository and migrations for backups table and include_image_in_backup; integrates backup flows into the HTTP API and the UI client; exposes backup password management and restore modes (restore/import/clone). Wire BackupManager into Onebox initialization.

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@serve.zone/onebox',
-  version: '1.6.0',
+  version: '1.7.0',
   description: 'Self-hosted container platform with automatic SSL and DNS - a mini Heroku for single servers'
 }