feat: add Hostinger VPS, multi-destination backups and maintenance pages

- Add Hostinger server provisioning, API endpoints and lifecycle controls.
- Support multiple S3 destinations for database and volume backups.
- Add proxy error pages and application and service maintenance mode.
- Detect repository configuration and support environment imports.
- Add HTTP basic auth hash options and Redis-compatible database flushing.
- Improve Railpack builder cleanup and development instance backups.

tests/Unit/CoolifyUpgradeStatusTest.php

@@ -147,5 +147,7 @@ it('does not detect a running upgrade for empty or malformed status', function (
 })->with([
     'empty' => '',
     'missing fields' => '3|Pulling Docker images',
+    'blank timestamp' => '3|Pulling Docker images|',
+    'whitespace timestamp' => "3|Pulling Docker images| \t",
     'invalid timestamp' => '3|Pulling Docker images|not-a-date',
 ]);