add vscode server microvm and update user configurations

hosts/fw/configuration.nix

@@ -29,6 +29,7 @@
     # microvm
     ./modules/microvm.nix
     ./modules/gitea-vm.nix
+    ./modules/vscode-server.nix  # Add VS Code Server microvm
 
     # web
     ./modules/web

hosts/fw/modules/vscode-server.nix

@@ -0,0 +1,40 @@
+{config, pkgs, lib, ...}:
+
+let
+  hostname = "vscode-server";
+  unstable = import (fetchTarball "https://github.com/NixOS/nixpkgs/archive/nixos-unstable.tar.gz") {
+    config = config.nixpkgs.config;
+    system = pkgs.system;
+  };
+in {
+  microvm.vms.${hostname} = {
+    autostart = true;
+    config = { config, pkgs, ... }: {
+      networking.hostName = hostname;
+
+      services.code-server = {
+        enable = true;
+        host = "0.0.0.0";
+        port = 8080;
+        auth = "none";
+        extensions = with pkgs.vscode-extensions; [
+          github.copilot
+          ms-azuretools.vscode-docker
+        ];
+      };
+
+      environment.systemPackages = [
+        unstable.ddev
+      ];
+
+      # Docker is required for ddev
+      virtualisation.docker.enable = true;
+    };
+
+    interfaces = [{
+      type = "tap";
+      id = "vm-${hostname}";
+      mac = "02:00:00:00:01:01";
+    }];
+  };
+}