Update/create package.json for monaco-languages to support ESM

This is an issue about the monaco-languages package.

I am trying to use the ESM version of one of the files while using ES modules (i.e., node --es-module-specifier-resolution=node --experimental-modules). Specifically, I am trying to do:

import { conf as stockPythonConfiguration, language as stockPythonLanguage } from "monaco-languages/release/esm/python/python"

Unfortunately, this does not work because the package.json for monaco-languages does not specify "type": "module". I suspect setting this would break things for other people, so perhaps there needs to be a separate monaco-languages-esm module with "type": "module" in its package.json?

Start by inspecting the monaco-languages package.json and the release/esm/python/python import path described in the issue. Determine how ESM metadata could support that import without breaking existing users, including whether a separate package is needed. Done means the demonstrated ESM import resolves while existing package usage remains supported.