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/views/backups/create.blade.php

@@ -27,7 +27,7 @@
         
             <div class="flex flex-row gap-4 mt-4">
                 <x-button.secondary wire:click="$set('visible', false)">Cancel</x-button.secondary>
-                <x-button.primary wire:click="backup" wire:loading.attr="disabled" wire:loading.class="opacity-50" wire:loading.attr="aria-busy" wire:target="backup"
+                <x-button.primary wire:click="backup" wire:loading.attr="disabled" wire:loading.class="opacity-50" wire:target="backup"
                     :disabled="!$this->canCreateBackup"
                     class="disabled:cursor-not-allowed">
                     <x-loading target="backup" />