Webpacker to jsbundling-rails migration skeleton

I highly recommend reading the full walkthrough article here --> https://aristo.hashnode.dev/webpacker-to-jsbundling-rails-migration

This is a skeleton for my migration from Webpacker to jsbundling-rails.

This migration skeleton includes:

• Code splitting feature
• Separate builds for development and production environments
• Setup webpack-dev-server in development mode with hot reload
• Integration of esbuild-loader for fast build time
• Optimizations and minimizers for production environment
• Easy configuration changes in webpack/config.js