Initialise an empty project

It would be good to provide functionality for empty/fresh projects (i.e. those without a package.json). In this case, the user would be alerted that this is a fresh project and guided through the process of executing `npm init` in order to generate a package.json file. All the options available through `npm init` would be available through the GUI, allowing full control. However, the options would be thoroughly explained.

Not sure the best UX for this - maybe a series of onboarding style modals (like [here](https://material.io/design/communication/onboarding.html#self-select-model)), though i'm up for discussion on this.