Webpack configurations for NPM module bundle

[davidmeirlevy]

Hi,

As a wish of developing a multi micro-frontends applications, I discovered that the most elegant way of doing it, is to publish micro-frontends as npm packages, and use that inside a main micro-frontend, that can define requested specific versions of components.

In that case, I've made a config file for that specific target, and I will add a PR for it, so others can use it too, after I'll finish investigate how this development process is convenient for me and my team.