Added preloader, initial estimate decoder.

electron/preload.js

@@ -0,0 +1,31 @@
+console.log("Running preloader!");
+const { contextBridge, ipcRenderer } = require("electron");
+
+ipcRenderer.removeAllListeners();
+contextBridge.exposeInMainWorld("ipcRenderer", {
+  send: (channel, data) => {
+    //    whitelist channels
+    // let validChannels = ["toMain"];
+    // if (validChannels.includes(channel)) {
+    ipcRenderer.send(channel, data);
+    //}
+  },
+  on: (channel, func) => {
+    // let validChannels = ["fromMain"];
+    // if (validChannels.includes(channel)) {
+    //  Deliberately strip event as it includes `sender`
+    ipcRenderer.on(
+      channel,
+      func
+      ///(event, ...args) => func(...args)
+    );
+    // }
+  },
+  removeAllListeners: (...channels) => {
+    // let validChannels = ["fromMain"];
+    // if (validChannels.includes(channel)) {
+    // Deliberately strip event as it includes `sender`
+    ipcRenderer.removeAllListeners(...channels);
+    // }
+  },
+});