Support for new SDK

[ainhoa-a]

• [x] Please update repo to modify the target to compile on the new SDK
• [x] Update configuration.
• [x] Provide bindings for the LNSP
• [x] Add nanosp to models in all our tests

[ghost]

Depends on https://github.com/Zondax/ledger-rust/issues/12

[ghost]

Closed by #188