Support security keys for SSH/Git

https://github.blog/2021-05-10-security-keys-supported-ssh-git-operations/

I'm not sure what is required for supporting this, just adding the ecdsa-sk and ed25519-sk key type?

added scopeenhancement label

added todo label

removed todo label

added scopesecurity label

There's a patch for this in mailing list: https://lists.archlinux.org/pipermail/aur-dev/2021-June/005006.html

Merged in commit b32022a1

closed