Adds a search bar to vending machines (#20326)

* Adds a search bar to vending machines

* fix indentation

* whitespace again

---------

Co-authored-by: ike709 <ike709@github.com>

Content.Client/VendingMachines/VendingMachineBoundUserInterface.cs

@@ -30,6 +30,7 @@ namespace Content.Client.VendingMachines
 
             _menu.OnClose += Close;
             _menu.OnItemSelected += OnItemSelected;
+            _menu.OnSearchChanged += OnSearchChanged;
 
             _menu.Populate(_cachedInventory);
 
@@ -74,5 +75,10 @@ namespace Content.Client.VendingMachines
             _menu.OnClose -= Close;
             _menu.Dispose();
         }
+
+        private void OnSearchChanged(string? filter)
+        {
+            _menu?.Populate(_cachedInventory, filter);
+        }
     }
 }