build(vscode): add recommend extensions

.vscode/extensions.json

@@ -7,8 +7,12 @@
     "dbaeumer.vscode-eslint",
     "antfu.unocss",
     "evils.uniapp-vscode",
+    "mrmaoddxxaa.create-uniapp-view",
     "uni-helper.uni-helper-vscode",
     "uni-helper.uni-app-schemas-vscode",
-    "mrmaoddxxaa.create-uniapp-view"
+    "uni-helper.uni-highlight-vscode",
+    "uni-helper.uni-ui-snippets-vscode",
+    "uni-helper.uni-app-snippets-vscode",
+    "uni-helper.uni-cloud-snippets-vscode"
   ]
 }