Recover Scripts from Muun Recovery Kit

Muun uses a 2/2 multi sig in descriptor format. This can be recovered with most of the tools provided by libstackmate, with a few additional requirements:

- pdf to string
- scrypt

Reference:

https://github.com/muun/recovery/blob/2b99c8a1fe3535a1830978c8c87a6b7682db47bc/vendor/github.com/muun/libwallet/recoverycode/recoverycode.go#L83