chore: make error more friendly

[VolodymyrBg]

1. In client.rs, I've updated the comment to be more descriptive about what we're doing with the error.
2. In error.rs, I've modified the error message format to include the actual error details from the Ledger device. The {0} in the error message will be replaced with the actual error message from the Ledger device, making it much more informative for users.
   Now when a Ledger error occurs, instead of just seeing "ledger error", users will see the specific error message from the Ledger device, which will help them understand what went wrong and how to fix it. For example, if there's a connection issue, they might see something like "ledger error: device not found" or if there's an authentication issue, they might see "ledger error: user rejected the operation".