Add generic Storage device test

Ideally the script would be shared by all the devices with storage providing a proper ioctl file, the current one doesn't include some more tests such as identification when multiple fingers are enrolled or requires verification/enrollment failures.

However, it would be nice to have those as default.

I didn't include them so far because I wanted to be able to re-use the goodix ioctl, while synaptics one has been re-recorded.

However, as per the pipeline failure it needs some love in reordering stuff (I got almost there, but still there's one final bit I'm missing...).