add subgroups in statics groups

Hi team,
I propose you a new feature. Creating subgroups in statics groups should help a lot to sort all of our computers.
We should have a static groups called "servers" for example, then we go in this group, and we should create subgroups, like "TSE", "Application servers", or many others, in order to get a simple interface, and deploy packages easier.
And the groups interface will be cleaner :) it's avoid to get 300 groups on 10 pages for example.

Thanks for your amazing work.