feat: Update Proxmox extension with various improvements and bug fixes

- Change listStates method to accept nullable integer for limit parameter.
- Modify TechnitiumDns class to return structured error messages on failure.
- Enhance VNC and xterm popup routes with user authorization checks.
- Update backups view to improve loading states and add unique keys for dynamic elements.
- Refactor cloud-init view to ensure proper data binding and improve user experience.
- Add wire:key attributes to various elements in views for better Livewire performance.
- Improve error handling and user feedback in the firewall view.
- Update server overview and statistics views to handle potential null values gracefully.
- Add new migration files to extend database schema with user-set icons and notes for Proxmox nodes.

extensions/Servers/Proxmox/TechnitiumDns.php

@@ -114,7 +114,10 @@ class TechnitiumDns
             
             $json = $response->json();
             if ($json['status'] !== 'ok') {
-                return false;
+                return [
+                    'success' => false,
+                    'message' => 'Failed to create DNS zone.',
+                ];
             }
             
             // Add A or AAAA record for the subdomain based on IP version
@@ -132,7 +135,10 @@ class TechnitiumDns
             
             $recordJson = $recordResponse->json();
             if ($recordJson['status'] !== 'ok') {
-                return false;
+                return [
+                    'success' => false,
+                    'message' => 'Failed to add DNS record.',
+                ];
             }
             
             // Add wildcard record (*.subdomain.dns.virtnet.host)