Integrate built-in stats in the response of depWalker #608
Description
Right now depWalker provides no stats about the run (number of API calls, which part takes the longer, etc).
With the newest version we added more and more features (such as external API calls) but no way to track them and see the impact of these additions.
We can achieve that step by step, for example by adding the number of API calls made to the NPM registry