Add vscode

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

users/common/configs/vscode/langs/nix.nix

@@ -0,0 +1,23 @@
+{ pkgs, ... }:
+
+{
+  home-manager = {
+    sharedModules = [{
+      programs.vscode = {
+        userSettings = {
+          "nix.enableLanguageServer" = true;
+          "nix.formatterPath" = "nixpkgs-fmt";
+          "nix.serverSettings" = {};
+        };
+        extensions = with pkgs; with vscode-extensions; [
+          jnoortheen.nix-ide
+        ];
+      };
+
+      home.packages = with pkgs; [
+        nil
+        nixpkgs-fmt
+      ];
+    }];
+  };
+}