Add Tailwind Add-on

[Thiramate (Gut) Akkachairin]

Why

As we will add the web variant to Gin template, CSS framework is nice to have to reduce set up steps for the developer

Acceptance Criteria

• Create Tailwind addon
• Include unit test

[Xavier MALPARTY]

@gutakk @hoangmirs
What setup of Tailwind would you like?

A. Minimal (just setup into postcss and add the vendor imports in application.scss:

// Vendors
@tailwind base;
@tailwind components;
@tailwind utilities;

Already done & working on my local machine ;-)

B. Add purge optimizations for Production (as recommended here)

C. Any other specific configuration to be included?