Created by: pavinthan
Add Tailwind as a PostCSS plugin in CRA build chain
Purpose: Tailwind CSS becomes most popular utility-first CSS framework seems 26,512 weekly downloads ( ref: https://www.npmjs.com/package/tailwindcss ) so CRA users able use Tailwind CSS without extending or customize CRA.
Tailwind configuration file loaded from env or default configuration file tailwind.js loaded as Tailwind CSS recommend ( ref: https://tailwindcss.com/docs/installation#2-create-a-tailwind-config-file ) from project root
Fixes : #5843 (closed)
Working example: Modified with tailwind
