feat: implement product seeding logic from image catalog and add supporting service methods and requests

app/Domains/Catalog/Requests/StoreProductRequest.php

@@ -31,6 +31,7 @@ class StoreProductRequest extends FormRequest
             'nombre' => ['required', 'string', 'max:255'],
             'descripcion' => ['nullable', 'string'],
             'precio' => ['required', 'numeric', 'min:0'],
+            'stock' => ['sometimes', 'integer', 'min:0'],
             'attribute_ids' => ['sometimes', 'array'],
             'attribute_ids.*' => [
                 'required',