Add `promiseMemo` function

[aleclarson]

Anyone is free to implement this proposal. Note that promiseMemo is the preferred name.

Discussed in https://github.com/orgs/radashi-org/discussions/200

^{Originally posted by aleclarson August 19, 2024}
Basically memo but rejected promises are not cached. Note that the "memo key" algorithm must be identical between memo and memoAsync.

Reference implementation: https://github.com/sindresorhus/p-memoize

[iiison]

Hi @aleclarson can I take the issue?