Allow to import a project with the package.json file about prevue

[hubelin]

Hey @edimitchel, we're definitely taking into considerations all the feature requests we've been getting. Can you please expand a little on what you mean?

[edimitchel]

When I open the app, I was frustrated to not be able to open my existing project and components.

I though it could be nice to be able to import component from files. But my idea here, goes further :
import a whole project from a package.json file and import all components based on the framework detected.
For Nuxt, components will be loaded from the directory component (or from folder determined in nuxt.config.js config).
For VuePress, components will be loaded from the directory .vuepress/theme/components.
..., etc.