The message that is returned by `gix-transport` for I/O errors can be
unhelpful, since it does not provide the reason for what happened.
Instead, surface the error so that it provides more detail for logging.
The `fn io_other` disguises all sorts of errors as I/O errors, making
errors in the transport component of `radicle-fetch` harder to
understand.
Instead, expose a new error type that allows to discriminate.
Pay more attention to when a Node ID is displayed in compact form. As
this was sometimes used to save space, e.g. in `rad node status` in
combination with long node addresses (like .onion names), also implement
a compact format for node addresses and use that instead in some cases.
Progress notifications in spinners keep the short form.
Fintan Halpenny
Lorenz Leutgeb