feat(Goods): 添加 Stripe 信息并优化金额处理

- 在 Goods 类中添加 stripe 属性，包含 Stripe 的 id、product_id 和 price_id
- 优化 amount 属性的处理方式，使用命名参数提高代码可读性
- 使用 when 方法条件性地加载 Stripe 信息，提高数据处理灵活性

src/Resource/Goods.php

@@ -25,7 +25,8 @@ use Money\Money;
  * @property-read int $id
  * @property-read string $goodsName
  * @property-read array<string, mixed>|array{} $goodsSpec
- * @property-read Money $amount
+ * @property-read Money|array{'price': int, 'currency': string} $amount
+ * @property-read array{'id': int, 'product_id': string, 'price_id': string} $stripe
  */
 final class Goods extends JsonResource
 {
@@ -40,7 +41,19 @@ final class Goods extends JsonResource
             'id' => $this->id,
             'goodsName' => $this->goodsName,
             'goodsSpec' => $this->goodsSpec,
-            'amount' => new Money($this->amount['price'], new Currency($this->amount['currency']))
+            'amount' => new Money(
+                amount: $this->amount['price'],
+                currency: new Currency($this->amount['currency']),
+            ),
+            'stripe' => $this->when(
+                condition: isset($this->resource->stripeProduct),
+                value: fn()
+                    => [
+                    'id' => $this->stripe['id'],
+                    'product_id' => $this->stripe['product_id'],
+                    'price_id' => $this->stripe['price_id'],
+                ],
+            ),
         ];
     }