move virt to module

modules/nix/virt.nix

@@ -0,0 +1,10 @@
+{ config, lib, pkgs, ... }:
+{
+  programs.virt-manager.enable = true;
+  users.groups.libvirtd.members = ["smayzy"];
+  virtualisation.libvirtd.enable = true;
+
+  environment.systemPackages = with pkgs; [
+  qemu
+  ];
+}