feat: Implement price list management and import functionality

- Added ListinoRelationManager for managing price lists associated with models.
- Introduced ImportaListiniAction for importing price lists from Excel files.
- Created ListinoPrezzo model to represent price entries in the database.
- Developed ListinoExcelParser for parsing Excel files containing price lists.
- Implemented ListinoImporter to handle the import logic and associations.
- Added migration for creating listino_prezzi table and converting measures to mm.
- Updated frontend logic to handle new price list features and validations.
- Enhanced tests for price list import and conversion functionalities.

backoffice/app/Http/Controllers/Api/CatalogoController.php

@@ -35,6 +35,26 @@ class CatalogoController extends Controller
         return response()->json($this->sistema($sistema));
     }
 
+    /**
+     * GET /api/sistemi/{codice}/modelli/{modello}/listino
+     * Griglia prezzi del modello (misure in mm), ordinata per altezza e larghezza.
+     */
+    public function listino(string $codice, string $modello): JsonResponse
+    {
+        $modello = Modello::attivi()
+            ->where('codice', $modello)
+            ->whereHas('sistema', fn ($q) => $q->where('codice', $codice)->where('attivo', true))
+            ->firstOrFail();
+
+        $prezzi = $modello->listino()
+            ->orderBy('altezza')
+            ->orderBy('larghezza')
+            ->get(['altezza', 'larghezza', 'prezzo'])
+            ->map(fn ($p) => ['altezza' => $p->altezza, 'larghezza' => $p->larghezza, 'prezzo' => $p->prezzo]);
+
+        return response()->json($prezzi);
+    }
+
     private function sistema(Sistema $sistema): array
     {
         return [