[Documentation] Chores - ES Module

[wailinkyaww]

This PR aim to add a documentation on how to initialize the Logging namespace when using ES Module.

ES modules - module system is differ from traditional commonjs.

The key problem is, they hoist all the import statements, then execute the code from the first import first ( from top to bottom ).

This cause the loggers inside imported files to have default namespace other than the one initialized in entry file like index.ts.

I spent a few days debugging on this. Hope this help!

Other Tips:

Pass in the filename explicitly:

import { Log } from 'debug-next'

const { log, logVerbose, ... } = Log(import.meta.filename) // <- for logging inside a file