add proper borg setup for cream

add jobrad

nixos/components/gui/home-manager/ssh.nix

@@ -9,6 +9,10 @@
           identityFile = "~/.ssh/palo_rsa.pub";
           identitiesOnly = true;
         };
+        "*.jobrad.org" = {
+          user = "iwagner";
+          identityFile = "~/.ssh/jobrad_ed25519";
+        };
         "lassul.us" = {
           user = "download";
           port = 45621;