Task: Better error messages on CLI

[a-mpch]

Description

Whenever we use the CLI and something goes wrong we show the gRPC status as the error message.
Example:
Error paying for offer: Status { code: Internal, message: "Internal error: Failed to send payment", metadata: MetadataMap { headers: {"content-type": "application/grpc", "date": "Fri, 12 Sep 2025 13:54:13 GMT"} }, source: None }

We could do better on the information displayed there and actually hint the user what to do next or what failed. We could hint the user in what part of the process the payment fail, we could just drop the "metadata" part and probably use codes from #227

[IgnacioPorte]

I can take this

[a-mpch]

thanks! @IgnacioPorte