create fetch wrapper with mandatory user agent header

app/helpers/fetchWrapper.js

@@ -0,0 +1,13 @@
+const nodeFetch = require("node-fetch");
+
+const fetch = async (url, options = {}) => {
+  const newOptions = Object.assign({}, options);
+  if (!newOptions["headers"]) {
+    newOptions["headers"] = {};
+  }
+  newOptions["headers"]["User-Agent"] =
+    "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.106 Safari/537.36";
+  return nodeFetch(url, newOptions);
+};
+
+module.exports = fetch;