feat-req: isRetryable support promise

[wxqqh]

I hope to support Promise callbacks within isRetryable, allowing it to obtain the status of other asynchronous data for judgment

export interface RetryOpts extends BaseRetryOpts {
  isRetryable?: (err: Error) => boolean | Promise<boolean>
}

promise-utils/src/retry.ts

Line 8 in 87491ff

export interface RetryOpts extends BaseRetryOpts {