feat(grfn/system): Resuscitate roswell

Resuscitate the configuration for roswell, the semi-portable
configuration I use for ec2 development boxes. Lots of the changes here
are trying to get Tramp working.

Change-Id: I2dc2fd1d9aa76e145fa3f3f847af761cb652ab47
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5798
Reviewed-by: grfn <grfn@gws.fyi>
Autosubmit: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI

users/grfn/system/system/modules/common.nix

@@ -55,7 +55,6 @@ with lib;
       "wheel"
       "networkmanager"
       "audio"
-      "docker"
     ];
     shell = pkgs.zsh;
   };

users/grfn/system/system/modules/development.nix

@@ -3,4 +3,13 @@
 {
   virtualisation.docker.enable = true;
   users.users.grfn.extraGroups = [ "docker" ];
+
+  security.pam.loginLimits = [
+    {
+      domain = "grfn";
+      type = "soft";
+      item = "nofile";
+      value = "65535";
+    }
+  ];
 }