feat: renamed computers to hosts

hosts/shared/libvirt.nix

@@ -0,0 +1,22 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}: let
+  cfg = config.alqueva.libvirt;
+in {
+  options.alqueva.libvirt = {
+    enable = lib.mkEnableOption "libvirt";
+  };
+
+  config = lib.mkIf cfg.enable {
+    virtualisation.libvirtd = {
+      enable = true;
+      qemu.package = pkgs.qemu_kvm;
+    };
+
+    programs.virt-manager.enable = true;
+    networking.nftables.enable = true;
+  };
+}