Consider updating v4 documentation for angular

[heddendorp]

After trying to bring tailwind v4 support to the angular cli in angular/angular-cli#28939 I found that angular does have support for postcss based tailwind with the application builder anyways.
Here is some more information about the topic https://angular.dev/tools/cli/build-system-migration

So for tailwind, I think it would be smart to document how it can be used with the application builder even without specific changes in the angular cli.

All it takes is to install tailwind and the postcss plugin and then create a postcss.config.json in the root folder with the following content.

{
  "plugins": {
    "@tailwindcss/postcss": {}
  }
}

I'm happy to contribute this in the right place if that is helpful or try to clear remaining things up.

[philipp-spiess]

This is going to be fixed in a new version of the website (coming soon 👀 )

[heddendorp]

This is going to be fixed in a new version of the website (coming soon 👀 )

Ah perfect just thought it would be worth a mention in case that was not already in. Even better then 👍