Missing retry in storage and firestore trigger decorators

Hi there,

There doesn't seem to be a way to enable retry on Firebase Storage `storage_fn` and Firestore `firestore_fn` background functions. It would really be helpful if we can enable it similar to the `pubsub_fn.on_message_published(retry=)`.

首先阅读 pubsub_fn.on_message_published(retry=)，并将其与 storage_fn 和 firestore_fn 装饰器进行比较。跟踪相关装饰器入口点和测试，然后验证两个装饰器都接受 retry 配置，并且生成的函数会按预期重试。

由索引模型根据 Issue 内容生成。