Feature request: Save Descriptor to SD card (and recover it from SD)

[odudex]

Moving issues and feature requests from odudex repo to here, this is from Bitconheiro:

After importing a multisig descriptor (or any descriptor) via QR would be great if there would be an option to save it to the microSD in a standard format for importing to other devices/coordinators and/or back to krux when/if needed.

This way I don't need to scan it from the coordinator every time I want to check an address of a multisig wallet.

Original: odudex#11

[tadeubas]

Wow, nice coincidence! I am already doing this feature!