Use libusb-1 to query info about usb devices in kinfocenter.
Remove *BSD specific code: it doesn't work on all supported FreeBSD versions. In principle it can be saved for NetBSD, but NetBSD could use libusb-1, thus drop it for simplification.
Remove polling and use DeviceNotifier instead.
Add FindLibUSB-1.cmake
Testing
I've tested it only on FreeBSD. It would nice to test at least FindLibUSB-1.cmake on other OSes.