Unclear that pcscd is not running

[kallisti5]

while doing foks yubikey use on a new system, foks was returning a non-descriptive error:

Detecting the lack of pcscd running and warning the use might be relevant here.

> Tip:  Ensure the pcscd service is running to interact with hardware tokens

ArchLinux doesn't start pcscd by default when pcsclite is installed.