scanned devices aren't de-duped wrt config-specified

see https://github.com/AnalogJ/scrutiny/blob/3ee4e59789a518d361083c505b2d7e33996e3eca/collector/pkg/detect/detect.go#L126-L210

if a user specifies something like /dev/disk/by-path/... (which can be preferable) that links to /dev/sda, then both make it into the final devices list because we look up by path string. this would cause two inserts of data on the same drive for a given collector run