enable git lfs for github desktop

there was an error upon opening the application before enabling lfs, so it needs to be enabled

hosts/nixos-vm/home.nix

@@ -36,11 +36,11 @@
   programs.git = {
     enable = true;
 
+    lfs.enable = true;
+
     settings = {
       user.name = "Grey Jones";
       user.email = "grey@greyweather.dev";
-      #user.signingkey = "CC7388DF8E1890729921BCFF7C67C51C2FF524D9";
-      #commits.gpgsign = true;
     };
 
     signing = {