[docs]: configuration example with ESM

Please add examples with ESM in the [Configuration section](https://github.com/import-js/eslint-import-resolver-typescript#configuration) for flat config in README. Something like https://github.com/sindresorhus/eslint-plugin-unicorn#es-module-recommended