[lib][native] Move device list ops to lib

Summary:
It's good to have them all in one place. In next diff I'm adding another one which is called from lib
Extracted function to fetch latest device list - it's going to be used in a lot of places.

Test Plan: Flow, ran QR auth

Reviewers: kamil, marcin, varun

Reviewed By: kamil

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D12238