Implement NotifyOnStatusChange feature for nodes and enhance Telegram notifications

- Added `NotifyOnStatusChange` property to the `Node` class and related DTOs to allow individual node configuration for status change notifications.
- Updated `NodeHealthCheckService` to send Telegram notifications to admins when a node's status changes, based on the new property.
- Enhanced the `ITelegramNotifier` interface with a method for notifying admins about node status changes.
- Modified the frontend to include a checkbox for `NotifyOnStatusChange` in the node editing dialog, allowing admins to easily configure this setting.
- Updated API documentation to reflect the new `notifyOnStatusChange` parameter in the node update endpoint.
- Added tests to ensure the correct behavior of the new feature and its integration with existing functionality.

frontend/src/features/admin/nodes/EditNodeDialog.tsx

@@ -17,12 +17,22 @@ export function EditNodeDialog({ node, open, onOpenChange }: { node: NodeDto; op
   const [baseAddress, setBaseAddress] = useState(node.baseAddress)
   const [location, setLocation] = useState(node.location ?? '')
   const [isEnabled, setIsEnabled] = useState(node.isEnabled)
+  const [notifyOnStatusChange, setNotifyOnStatusChange] = useState(node.notifyOnStatusChange)
   const [username, setUsername] = useState(node.username)
   const [password, setPassword] = useState('')
 
   const mutation = useMutation({
     mutationFn: () =>
-      updateNode(node.id, name.trim(), baseAddress.trim(), location.trim() || undefined, isEnabled, username.trim() || undefined, password || undefined),
+      updateNode(
+        node.id,
+        name.trim(),
+        baseAddress.trim(),
+        location.trim() || undefined,
+        isEnabled,
+        notifyOnStatusChange,
+        username.trim() || undefined,
+        password || undefined,
+      ),
     onSuccess: async () => {
       toast.success(t('admin.nodes.updated'))
       await queryClient.invalidateQueries({ queryKey: ['admin-nodes'] })
@@ -66,6 +76,14 @@ export function EditNodeDialog({ node, open, onOpenChange }: { node: NodeDto; op
             <input type="checkbox" checked={isEnabled} onChange={(e) => setIsEnabled(e.target.checked)} />
             {t('admin.nodes.enabled')}
           </label>
+          <label className="flex items-center gap-2 text-sm">
+            <input
+              type="checkbox"
+              checked={notifyOnStatusChange}
+              onChange={(e) => setNotifyOnStatusChange(e.target.checked)}
+            />
+            {t('admin.nodes.notifyOnStatusChange')}
+          </label>
           <div className="flex flex-col gap-1.5">
             <Label htmlFor="editUsername">
               {t('admin.nodes.username')} ({t('admin.nodes.optional')})