feat: add flake to create iso and create VMs

nixos/proxmox/iso.nix

@@ -0,0 +1,23 @@
+{  config, lib, pkgs, meta, ...}:
+{
+  imports = [./users.nix];
+
+  nix = {
+    settings.experimental-features = ["nix-command" "flakes"];
+  };
+
+  isoImage = {
+    isoName = "${config.system.nixos.distroId}-yadunut.iso";
+  };
+  services.openssh.enable = true;
+
+  services.qemuGuest.enable = true;
+
+  environment.systemPackages = with pkgs; [
+    git
+    neovim
+    wget
+  ];
+
+  system.stateVersion = "24.05";
+}