backups: add hetzner object storage

dashboard/src/js/client.js

@@ -167,6 +167,10 @@ const REGIONS_WASABI = [
     { name: 'Virginia (US East 2)', value: 'https://s3.us-east-2.wasabisys.com' }
 ];
 
+const REGIONS_HETZNER = [
+    { name: 'Falkenstein (FSN1)', value: 'https://fsn1.your-objectstorage.com' },
+];
+
 // https://docs.digitalocean.com/products/platform/availability-matrix/
 const REGIONS_DIGITALOCEAN = [
     { name: 'AMS3', value: 'https://ams3.digitaloceanspaces.com' },
@@ -292,6 +296,7 @@ const STORAGE_PROVIDERS = [
     { name: 'Filesystem', value: 'filesystem' },
     { name: 'Filesystem (Mountpoint)', value: 'mountpoint' }, // legacy
     { name: 'Google Cloud Storage', value: 'gcs' },
+    { name: 'Hetzner Object Storage', value: 'hetzner-objectstorage' },
     { name: 'IDrive e2', value: 'idrive-e2' },
     { name: 'IONOS (Profitbricks)', value: 'ionos-objectstorage' },
     { name: 'Linode Object Storage', value: 'linode-objectstorage' },