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/Filament/Resources/ModelloResource.php

@@ -3,6 +3,7 @@
 namespace App\Filament\Resources;
 
 use App\Filament\Resources\ModelloResource\Pages;
+use App\Filament\Resources\ModelloResource\RelationManagers\ListinoRelationManager;
 use App\Models\Modello;
 use Filament\Forms;
 use Filament\Forms\Form;
@@ -126,6 +127,13 @@ class ModelloResource extends Resource
                     ->badge()
                     ->formatStateUsing(fn (?string $state) => Modello::CATEGORIE[$state] ?? $state)
                     ->placeholder('—'),
+                Tables\Columns\TextColumn::make('listino_count')
+                    ->label('Listino')
+                    ->counts('listino')
+                    ->formatStateUsing(fn (int $state) => $state ? "{$state} prezzi" : 'Nessuno')
+                    ->color(fn (int $state) => $state ? null : 'gray')
+                    ->description(fn (Modello $record) => $record->listino_aggiornato_at?->format('d/m/Y'))
+                    ->sortable(),
                 Tables\Columns\ToggleColumn::make('attivo')
                     ->label('Attivo')
                     ->disabled(fn (Modello $record) => ! $record->attivo && (! $record->cartella || ! $record->file_modello)),
@@ -146,6 +154,13 @@ class ModelloResource extends Resource
             ]);
     }
 
+    public static function getRelations(): array
+    {
+        return [
+            ListinoRelationManager::class,
+        ];
+    }
+
     public static function getPages(): array
     {
         return [