Migrate from NAN -> NAPI

[cowboyd]

What

N-API is a forward ABI compatible API that is supported by Node, Deno, and Bun. By using N-API instead of NAN, @confluent/kafka-javascript will be able to run on all those runtimes as well as any other runtime that comes along that supports N-API.

Checklist

• Contains customer facing changes? Including API/behavior changes
• Did you add sufficient unit test and/or integration test coverage for this PR?
  • If not, please explain why it is not required

References

JIRA:

Test & Review

Open questions / Follow-ups

[milindl]

Hey @cowboyd, thanks for the PR!
I've not tested it yet, but eventually replacing NAN with N-API makes sense. We'll probably do this with a major version release though, not immediately, I'll discuss this internally.

[cowboyd]

@milindl Thanks! I'm sure that it's broken in a number of ways, but my goal was to get most of the grunt work out of the way. I'd be happy to help you all push further with this as I think it would be killer to get this working on Deno and Bun.

Let me know!