Remove test.php and enhance null safety and sorting across components

- Deleted `test.php` as it was no longer in use.
- Enhanced null safety checks in `Inventory.php`, `StdOut-detail.php`, `Backups.php`, and `SwitchsSAN.php` to prevent potential warnings.
- Refactored `SwitchsSAN.php` to improve sorting logic for ports based on errors, vFabric, and Port ID.
- Added seasonal snow effect script in `all.php` with toggle functionality for user engagement.
- Updated navigation bar (`navbar.html`) to include a new VIO page link.
- Introduced a new `VIO.php` page to display VIO monitoring details with table export and sorting features.

X/StdOut-detail.php

@@ -176,8 +176,8 @@
             <tbody> <?php
               foreach ($hosts as $h) {
                 $host = strtoupper($h['HOSTNAME']);
-                $os = strtoupper($h['Type']);
-                $osver = strtoupper($h['OSVersion']);
+                $os = strtoupper($h['Type'] ?? "");
+                $osver = strtoupper($h['OSVersion'] ?? "");
 
                 if ($os == "AIX") {
                   $taix++;