Consider caching DID resolution

[decentralgabe]

tbdex-js/packages/http-client/src/client.ts

Line 258 in cad8b96

const didDocument = await resolveDid(did)

This call can be cached within a reasonable time period (e.g. 10 minutes) to avoid duplicated network calls.

[decentralgabe]

cc: @kirahsapong

[kirahsapong]

i wonder if it is reasonable to save the result, and only in case of failure, fetch and try with new result?

[mistermoe]

a DidResolverCache cache can be added here. It defaults to no-op if one isn't provided. Given that this is an SDK, we should figure out how to surface the ability to provide one and maybe include 1-2 implementations of DidResolverCache.