Continue moving personal packages from overlays

Continue moving out of the overlay model for everything and into running
sutff directly out of the packages. This should give a cleaner
separation of the things that I don't need to maintain separately

pkgs/setup-ssh/setup-ssh.sh

@@ -0,0 +1,11 @@
+# vim: set ft=bash:
+file="${HOME}/.ssh/id_ed25519"
+if [ ! -f "${file}" ]; then
+	echo "Generating a new key"
+	ssh-keygen -t ed25519 -f "${file}" -N ''
+	cat "${file}.pub" >> /etc/nixos/home/ssh/authorized_keys
+
+	echo "Authing key to GitHub - may fail"
+	gh auth refresh -h github.com -s admin:public_key
+	gh ssh-key add -t "${HOSTNAME}-auto" "${file}" || true
+fi