feat: refactor product attributes handling to use product_attribute table and update related models and requests

app/Domains/Catalog/Models/Attribute.php

@@ -9,6 +9,7 @@ use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\HasManyThrough;
 
 #[Fillable([
     'tenant_codigo',
@@ -53,10 +54,25 @@ class Attribute extends Model
     }
 
     /**
-     * @return HasMany<ProductVariantDefinition, $this>
+     * @return HasMany<ProductAttribute, $this>
      */
-    public function variantDefinitions(): HasMany
+    public function productAttributes(): HasMany
     {
-        return $this->hasMany(ProductVariantDefinition::class, 'attribute_id');
+        return $this->hasMany(ProductAttribute::class, 'attribute_id');
+    }
+
+    /**
+     * @return HasManyThrough<ProductVariantDefinition, ProductAttribute, $this>
+     */
+    public function variantDefinitions(): HasManyThrough
+    {
+        return $this->hasManyThrough(
+            ProductVariantDefinition::class,
+            ProductAttribute::class,
+            'attribute_id',
+            'products_attribute_id',
+            'id',
+            'id'
+        );
     }
 }