Stop rewriting html entrypoints

This adds the necessary ES imports to the various entrypoints to
properly load their dependencies. This means that we can stop rewriting
the HTML entrypoints and simply copy them over to the build directory.

Bug: 1046596
Change-Id: If1182ed051a22cc2bb0c77456456ab039f63cec2
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2035791
Commit-Queue: Tim van der Lippe <[email protected]>
Reviewed-by: Paul Lewis <[email protected]>
diff --git a/front_end/node_app.html b/front_end/node_app.html
index f24991c..7bccb86 100644
--- a/front_end/node_app.html
+++ b/front_end/node_app.html
@@ -10,7 +10,7 @@
     <meta http-equiv="Content-Security-Policy" content="object-src 'none'; script-src 'self' 'unsafe-eval' 'unsafe-inline' https://chrome-devtools-frontend.appspot.com">
     <meta name="referrer" content="no-referrer">
     <script type="module" src="root.js"></script>
-    <script defer src="node_app.js"></script>
+    <script type="module" src="node_app.js"></script>
 </head>
 <body class="undocked" id="-blink-dev-tools"></body>
 </html>