Use constant for kitchen preset quantity (#34)

Author: shayancoin

frontend/src/app/stores/configurator-store.ts

@@ -17,6 +17,9 @@ export interface ConfiguratorState {
   applyKitchenPreset: () => void;
 }
 
+// Preset quantity used when applying the default kitchen configuration.
+const KITCHEN_PRESET_QUANTITY = 4;
+
 export const useConfiguratorStore = create<ConfiguratorState>((set, get) => ({
   materials: [],
   modules: [],
@@ -70,7 +73,7 @@ export const useConfiguratorStore = create<ConfiguratorState>((set, get) => ({
 
     set({
       selectedModuleId: preferredModule.id,
-      quantity: 4,
+      quantity: KITCHEN_PRESET_QUANTITY,
       quote: null,
     });
   },