Use single npm package

[evidolob]

Now we are using two npm modules, one for main code and second(nested) for frontend code.
Such approach makes difficult sharing code between main and render process. And managing dependency’s(some of them we need to install twice)

I propose to merge them in to one node module with such structure:

src/
   main/ -> contains main code
   shared/ -> contains shared code
   frontend/ -> contains frontend(renderer code)