feat: enhance backup functionality with attachment options

- Added support for including attachments in backup exports.
- Updated backup-related interfaces and functions to handle attachment options.
- Introduced a new UI component for selecting attachment inclusion during backup operations.
- Modified existing components to integrate the new attachment functionality.
- Improved user feedback and error handling during backup processes.

src/router-admin-backup.ts

@@ -3,6 +3,7 @@ import {
   handleAdminExportBackup,
   handleDownloadAdminRemoteBackup,
   handleDeleteAdminRemoteBackup,
+  handleDownloadAdminBackupAttachment,
   handleGetAdminBackupSettings,
   handleGetAdminBackupSettingsRepairState,
   handleAdminImportBackup,
@@ -24,6 +25,10 @@ export async function handleAdminBackupRoute(
     return handleAdminExportBackup(request, env, actorUser);
   }
 
+  if (path === '/api/admin/backup/blob' && method === 'GET') {
+    return handleDownloadAdminBackupAttachment(request, env, actorUser);
+  }
+
   if (path === '/api/admin/backup/settings') {
     if (method === 'GET') return handleGetAdminBackupSettings(request, env, actorUser);
     if (method === 'PUT') return handleUpdateAdminBackupSettings(request, env, actorUser);