npm-health: Implement data collection and metrics computation pipeline(s)

[pombredanne]

I want to collect specific data in ScanCode.io using GrimoireLab using a ScanCode.io pipeline.

The outcome should be new ScanCode.io pipeline(s) to download and/or clone code and collect metrics, by orchestrating the execution of AboutCode, GrimoireLab, and other open source tools. Collected data is stored for further metric computations.