Consider creating an npm package for the build tool

[heralden]

Whenever we make changes to generator-bluegenes-tool, those changes will only apply to new tools generated in the future. Older tools won't get any benefits of the changes.

Wouldn't it be nice to have an NPM package similar to react-scripts (used in create-react-app) that is included as a dependency, which handles building the JS and Less, linting, dev server, etc.? This way, any updates to it would just require an updating of the dependency in the tool projects, and they'll have all the updated features.

I added a "consider" to the title, as it's very possible the overhead of this could outweigh the benefits...