adding recommendation for Vue extension

nicegui.code-workspace

@@ -18,7 +18,8 @@
       "littlefoxteam.vscode-python-test-adapter",
       "cschleiden.vscode-github-actions",
       "samuelcolvin.jinjahtml",
-      "ms-python.isort"
+      "ms-python.isort",
+      "Vue.volar"
     ]
   },
   "launch": {