Convert into an installable desktop app using Electron

[nileshtrivedi]

Electron would work as it ships with NodeJS and a Chromium binary for the app's UI. We can probably reuse the same chromium to run the browser-based automations.

Tauri / NW.js / NeutralinoJS probably won't work.

[nileshtrivedi]

Electron does not support ES modules: electron/electron#21457

A plausible path is to convert entire existing code in this repo to a version supported by Electron.