RE:Salsa update: no more "-guest" and more

[PICCA Frederic-Emmanuel]

do we have some documentation explaining how to use a nitrokey PRO in order to 
do
2FA authentication for salsa ? It seesm that ybikey is suppoprted out of the 
box, but inevertheless is it possible to use a nitrokey pro 2 for the same 
purpose  ?