Packages are not only a way of distributing apps on AppExchange, but also to efficiently move work from development to production.
As a pre-condition to using Hutte's packaging feature, you need to create a package on your project by running "force:package:beta:create" against your DevHub (this Trailhead piece has step-by-step instructions and gives a good introduction to packaging with SFDX). Once you have committed and pushed the resulting additions to "sfdx-project.json," Hutte detects and visualizes your packages, their versions, and their meta information:
Furthermore, Hutte allows you to promote (release) beta packages and install them in the target orgs of your choice.
There is more to come for this feature in the future