geek/turris1x-sdcard-migration: Add Factory Reset from rescue image
https://wiki.turris.cz/en/public/system_and_bootloader_recovery_from_microsd_card
Implement the passages from Preparing a microSD card to Completing the operation.
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https://wiki.turris.cz/en/public/system_and_bootloader_recovery_from_microsd_card
Implement the passages from Preparing a microSD card to Completing the operation.