Add Usb preference and the corresponding controller.
Change-Id: I79e3f20b5c024ece0515f9a6cba1185ba8b8c7be
Fixes: 31800290
Test: make RunSettingsRoboTests
Add the initial version for the connected devices category.
Test: RunSettingsRoboTests
Bug: 31800290
Change-Id: Ibacef7d5ceaae5e71ff5e5b1c35dafa7738e4f75