chore: complete migration of tailwind config from v3 to v4

[jfgrissom]

• Create new project from react-starter
• Add package @tailwindcss/vite to dev deps.
• Review manual upgrade docs
  • confirm postcss.config.js matches docs
  • add new import to vite.config.js
  • confirm directive is set in index.css file.
• Address theme changes from v3 to v4
  • Remove theme from tailwind.config.js file.
  • Add theme to index.css file.
• Retain fonts
  • Remove them from tailwind.config.js file.
  • Add them to index.css file.
  • Apply font to html tag.
• Merge changes back into create-juno/templates/react-starter

[jfgrissom]

This only handles this change for the react-starter template.

If this gets merged I'll assume it's what you're looking for and start on the rest.

[peterpeterparker]

Super cool, thanks!
I'll give it a shot and propagate the changes in every templates this week.
I keep the PR open as a reminder 😉