Iterate over Virtualization objects instead of DCIM only.

[kacem-expereo]

Hello team,
Is there a way to use the nornir-nautobot plugin to build the inventory from the virtualization model instead of dcim?
From what I see it seems to be restricted to DCIM (it's also specified in the Readme).
Would this be aproved if I submit such PR or it's a choice by design to only support dcim?

Thank you!

[jvanderaa]

Support for Virtualization would be welcomed. If possible, through an option.