Feature request: allow retries for chunks

[nick42d]

When looking to integrate the fix for the fix for #31 into my project, youtui, I noticed that even the individual chunks of a Stream can fail. To then retry streaming I need to start from the start again.

From what I can tell a simple way to resolve could be the addition of a new chunk_with_retries method on the Stream trait, since the requests inside NonLiveStream and LiveStream seem on first glance to be repeatable.

Let me know your thoughts and I'm happy to have a go with a PR.

[Mithronn]

This crate already uses the reqwest-retry crate but it only retries for 500..599, 408, and 429 status codes. I will publish a new commit with a new strategy which includes 400..499 and 500..599. But feel free to make new PR maybe your solution would be better