nakamoto-wallet: `--addresses` parameter is currently ignored

`nakamoto-wallet` specifies a parameter `--addresses`:

https://github.com/cloudhead/nakamoto/blob/9ea71ed71655e41b8b1ec7db02b4b8dea6f9f1ea/wallet/src/main.rs#L15-L17

But the value of that parameter is never read anywhere. In the start of wallet loop, the addresses are either fetched from the database, or if that is empty, from the hardware device:

https://github.com/cloudhead/nakamoto/blob/9ea71ed71655e41b8b1ec7db02b4b8dea6f9f1ea/wallet/src/wallet.rs#L103-L122

Happy to open a PR if someone can point me into the right direction how that parameter was intended. If it's specified, should only those addresses be watched or do we still want to load the ones from the database?