[FEATURE] Fibonacci Retry Policy

[ns-vasilev]

Feature Summary

Introduce a new FibonacciRetryPolicy to the Typhoon library. This policy calculates wait intervals between retries based on the Fibonacci sequence $$F_n=F_{n-1}+F_{n-2}$$, providing a natural progression for backoff timing.

Motivation

Currently, most retry libraries offer fixed or exponential backoff. While exponential backoff is powerful, it can sometimes grow too rapidly for certain distributed systems. A Fibonacci sequence offers a "middle ground" that increases delay more gradually than powers of 2, often aligning better with how systems recover from transient failures.