[hard] Extract shared retry logic into service-kit package

[davedumto]

Summary

Retry-with-backoff logic is currently implemented separately in wallet-service, verification-service, and lifecycle-service.

Requirements

• Extract a shared retry utility into service-kit
• Migrate at least two services to use the shared utility
• Add unit tests for the shared retry utility covering backoff and jitter
• Document usage in the service-kit README

[emickwrld]

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Hi, I’m a smart contract and a full-stack web developer, I have read through the issue and it’s something I’m capable of doing. Please assign me this work.

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[Hallab7]

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I would like to work on this issue

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