feat: add vscode-jest extension (#3783)

.vscode/extensions.json

@@ -2,6 +2,7 @@
   "recommendations": [
     "EditorConfig.editorconfig",
     "esbenp.prettier-vscode",
-    "dbaeumer.vscode-eslint"
+    "dbaeumer.vscode-eslint",
+    "Orta.vscode-jest"
   ]
 }