refs: #22

1. --config to use any eslint-config-xxx npm packages, and skip asking questions. e.g.

$ npm init @eslint/config --config react-app # extends eslint-config-react-app
$ npm init @eslint/config --config airbnb # extends eslint-config-airbnb

2. --yes to skip asking questions(similar to npm init --yes), the default format is js.(other formats will be going away in the new config)