Add ProductVariant model and migration for productos_variantes table

app/Domains/Catalog/Models/Product.php

@@ -8,6 +8,7 @@ use Illuminate\Database\Eloquent\Attributes\Fillable;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
 
 #[Fillable([
     'tenant_codigo',
@@ -39,4 +40,12 @@ class Product extends Model
     {
         return $this->belongsTo(Tenant::class, 'tenant_codigo', 'codigo');
     }
+
+    /**
+     * @return HasMany<ProductVariant, $this>
+     */
+    public function variants(): HasMany
+    {
+        return $this->hasMany(ProductVariant::class, 'producto_id');
+    }
 }

app/Domains/Catalog/Models/ProductVariant.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace App\Domains\Catalog\Models;
+
+use Illuminate\Database\Eloquent\Attributes\Fillable;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+#[Fillable([
+    'producto_id',
+    'slug',
+    'nombre',
+    'stock',
+    'descripcion',
+    'precio',
+])]
+class ProductVariant extends Model
+{
+    use HasFactory;
+
+    protected $table = 'productos_variantes';
+
+    protected function casts(): array
+    {
+        return [
+            'producto_id' => 'integer',
+            'stock' => 'integer',
+            'precio' => 'decimal:2',
+        ];
+    }
+
+    /**
+     * @return BelongsTo<Product, $this>
+     */
+    public function product(): BelongsTo
+    {
+        return $this->belongsTo(Product::class, 'producto_id');
+    }
+}