Eng 702 static resources not copied in final bundle

[Kerruba]

With this PR I've implemented some functionalities:

1. To support ENG-702 now I sync the content of the static folder in the MFE sources to the resources of the bundle
2. I've also implemented the fix for ENG-701 so that we search now for bundles folder only at ui/widgets/{entity}/{widgets} level rather than in the full ui/widgets/ tree
3. I've introduced also an .env.production environment with a PUBLIC_URL that should solve the portability of the bundle. This is only a temp solution to ENG-728 until we find a more general solution for any ingressPath of the entando-de-app the user would like to use
4. I've also created a script that will build and publish automatically the docker image for the microservice generated with the blueprint, and it's invokable using the ./buildBundle [-d|--doker]. I've also created a new run script in the package.json to call this: npm run build-all. Happy to get feedback on this