Migrate config (frues-pc machine for now) from https://git.peprolinbot.com/peprolinbot/nixos-config, with improvements

modules/virtualisation.nix

@@ -0,0 +1,28 @@
+{pkgs, ...}: {
+  # Install necessary packages
+  environment.systemPackages = with pkgs; [
+    virt-manager
+    virt-viewer
+    spice
+    spice-gtk
+    spice-protocol
+    win-virtio
+    win-spice
+    adwaita-icon-theme
+  ];
+
+  # Manage the virtualisation services
+  virtualisation = {
+    libvirtd = {
+      enable = true;
+      qemu = {
+        swtpm.enable = true;
+        ovmf.enable = true;
+        ovmf.packages = [pkgs.OVMFFull.fd];
+      };
+    };
+
+    spiceUSBRedirection.enable = true;
+  };
+  services.spice-vdagentd.enable = true;
+}