feat: add sort option to station search form

app/Livewire/Public/StationSearch.php

@@ -19,6 +19,9 @@ class StationSearch extends Component
     #[Validate('required|integer|min:1|max:20')]
     public int $radius = 5;
 
+    #[Validate('required|string|in:price,distance,updated,brand')]
+    public string $sort = 'price';
+
     public array $results = [];
 
     public array $meta = [];
@@ -42,7 +45,7 @@ class StationSearch extends Component
                     'postcode' => $this->search,
                     'fuel_type' => $this->fuelType,
                     'radius' => $radiusKm,
-                    'sort' => 'price',
+                    'sort' => $this->sort,
                 ]);
         } catch (ConnectionException) {
             $this->apiError = 'Unable to fetch stations. Please try again.';