build: move zone.js to angular repo (#30962)

PR Close #30962

packages/zone.js/simple-server.js

@@ -0,0 +1,34 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+const http = require('http');
+const path = require('path');
+const fs = require('fs');
+let server;
+
+const localFolder = __dirname;
+
+function requestHandler(req, res) {
+  if (req.url === '/close') {
+    res.end('server closing');
+    setTimeout(() => { process.exit(0); }, 1000);
+  } else {
+    const file = localFolder + req.url;
+
+    fs.readFile(file, function(err, contents) {
+      if (!err) {
+        res.end(contents);
+      } else {
+        res.writeHead(404, {'Content-Type': 'text/html'});
+        res.end('<h1>404, Not Found!</h1>');
+      };
+    });
+  };
+};
+
+server = http.createServer(requestHandler).listen(8080);