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/Models/ListinoPrezzo.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class ListinoPrezzo extends Model
+{
+    protected $table = 'listino_prezzi';
+
+    protected $fillable = [
+        'modello_id', 'larghezza', 'altezza', 'prezzo',
+    ];
+
+    protected $casts = [
+        'larghezza' => 'integer',
+        'altezza' => 'integer',
+        'prezzo' => 'float',
+    ];
+
+    public function modello(): BelongsTo
+    {
+        return $this->belongsTo(Modello::class);
+    }
+
+    protected static function booted(): void
+    {
+        // Le modifiche manuali dal pannello aggiornano la data del listino del modello.
+        $tocca = fn (ListinoPrezzo $prezzo) => $prezzo->modello?->update(['listino_aggiornato_at' => now()]);
+
+        static::saved($tocca);
+        static::deleted($tocca);
+    }
+}

backoffice/app/Models/Modello.php

@@ -5,6 +5,7 @@ namespace App\Models;
 use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Support\Facades\Storage;
 
 class Modello extends Model
@@ -36,12 +37,14 @@ class Modello extends Model
     protected $fillable = [
         'sistema_id', 'codice', 'nome', 'descrizione', 'icona', 'ordine', 'attivo',
         'cartella', 'file_modello', 'categoria', 'cartella_texture', 'moduli',
+        'listino_aggiornato_at',
     ];
 
     protected $casts = [
         'ordine' => 'integer',
         'attivo' => 'boolean',
         'moduli' => 'array',
+        'listino_aggiornato_at' => 'datetime',
     ];
 
     public function sistema(): BelongsTo
@@ -49,6 +52,11 @@ class Modello extends Model
         return $this->belongsTo(Sistema::class);
     }
 
+    public function listino(): HasMany
+    {
+        return $this->hasMany(ListinoPrezzo::class);
+    }
+
     public function scopeAttivi(Builder $query): Builder
     {
         return $query->where('attivo', true)->orderBy('ordine')->orderBy('id');