add base files for web interface

tools/web_testbench/public/events.js

@@ -0,0 +1,7 @@
+import {generate_layout} from "./create_layout.js"
+
+// when miner data is sent
+ws.onmessage = function(event) {
+    // generate the layout of the page
+    generate_layout(JSON.parse(event.data));
+});