✅ Add Yubikey support

[lilarcor]

Hello, do you have the plan to add function of authenticating with Yubikey.

[isontheline]

Hello @lilarcor 👋

Thank you so much for your feedback 🙏
There is an open issue related to your request here : #697

I don't know however when I could implement Yubikey / FIDO2 support inside WebSSH as it's not a trivial task.