ssh agent stuff, add nixarr host

nixos/base.nix

@@ -141,6 +141,11 @@
   programs.ssh = {
     enableAskPassword = false;
     forwardX11 = true;
+    extraConfig = ''
+      Host nixarr
+        Hostname 192.168.1.165
+        ForwardAgent yes
+      '';
   };
 
   sops = {
@@ -220,6 +225,7 @@
   services.openssh = {
     enable = true;
     settings = {
+      AllowAgentForwarding = true;
       PermitRootLogin = "no";
       PasswordAuthentication = false;
       KbdInteractiveAuthentication = false;