feat: Support ESM logging module

[segevfiner]

Fixes #760

I also want to add support for taking the logger from the main plugin module instead, in the same way you can specify an options object as a named export on it when giving the --options flag. But I haven't decided on how to name the CLI flag and if it should have a short single letter alias. Any suggestions? – This already exists as options.logger with --options enabled. But there is an issue with deepmerge and passing an already created pino.Logger.

Checklist

• run npm run test and npm run benchmark
• tests and/or benchmarks are included
• documentation is changed or added
• commit message and code follows the Developer's Certification of Origin
  and the Code of conduct

[mcollina]

CI is failing, could you take a look?

[segevfiner]

Unrelated test failure. Likely due to upgrade of Fastify at some point introducing stricter types. Fixed it anyhow.

[mcollina]

lgtm, thanks