Feature: support backoff algorithm to automatically retry requests if there any network errors

[huksley]

See how skypilot does it: https://github.com/skypilot-org/skypilot/blob/master/sky/provision/primeintellect/utils.py#L81

[shamrin]

@huksley we already retry instances.create(), we can do the same for other requests.