Tails Installer should notify when too small USB drives are not listed

Tails Installer ignores too small (<3.5 Gib currently) USB devices silently, which probably will lead to users thinking that Tails Installer fails to identify their USB device.

Perhaps we should notify users in the status log about all USB devices dropped for this reason? E.g.:

The following USB devices are too small to install Tails to (at least 3.5 GB is required):
• $PRODUCER1 $MODEL1 (2 GB) - /dev/sda
• $PRODUCER2 $MODEL2 (3 GB) - /dev/sdb
...

Alternatively, we list all USB devices but print an appropriate error message in the status when a too small one is selected + grey out the “Install” button.

Feature Branch: kurono:feature/9130-tails-installer-notify-on-smal-device

Related issues

Related to #9734 (closed)
Related to #9886 (closed)

Original created by @anonym on 9130 (Redmine)

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