debug: add ray logging for Hetzner createServer API request/response

Add detailed ray logging to track exactly what is being sent to Hetzner's
API and what response is received. This will help debug cloud-init script
integration and verify that user_data is properly included in the request.

Logs include:
- Request endpoint and full params object
- Complete API response

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/Services/HetznerService.php

@@ -108,8 +108,17 @@ public function uploadSshKey(string $name, string $publicKey): array
 
     public function createServer(array $params): array
     {
+        ray('Hetzner createServer request', [
+            'endpoint' => '/servers',
+            'params' => $params,
+        ]);
+
         $response = $this->request('post', '/servers', $params);
 
+        ray('Hetzner createServer response', [
+            'response' => $response,
+        ]);
+
         return $response['server'] ?? [];
     }