Support for NVMe data in RTL9210B USB adapter

[tsdmgz]

Hello! I was trying to understand why despite having an NVMe SSD connected over USB and smartctl outputting nvme_smart_health_information_log, this data missing from exporter output. It appears that device.type is sntrealtek and not nvme.

I'd imagine adding something like || smart.device.interface_ == "sntrealtek" in

smartctl_exporter/smartctl.go

Line 105 in ae66809

if smart.device.interface_ == "nvme" {

can account for this but I'm not sure if that's a good idea long term?

#267 (comment) could also be a similar issue here. Attaching also my drive's output from collect-smartctl-json.sh.

sntrealtek-null-SPCC_M.2_PCIe_SSD-sda.json