Enhance Proxmox views with improved loading states and UI updates

- Updated serverplaceholder.blade.php to enhance loading skeletons for server details.
- Added navigation breadcrumbs to statistics, subdomain, and system views for better user experience.
- Improved loading indicators for CPU, network, memory, and disk charts in statistics.blade.php.
- Refined storage.blade.php layout with section dividers and improved drive display, including bus type indicators and quota usage.
- Enhanced VNC and Xterm popups with a new header design, loading animations, and reconnect functionality.
- Added error handling for VNC and Xterm connections to inform users when unable to connect.

extensions/Servers/Proxmox/Http/Controllers/ServerTagController.php

@@ -59,7 +59,7 @@ class ServerTagController
         } catch (\Exception $e) {
             return response()->json([
                 'success' => false,
-                'error' => $e->getMessage(),
+                'error' => 'Failed to update tags.',
             ], 500);
         }
     }