Improve output format of the generated file

[kimmobrunfeldt]

By splitting the types into separate lines, editors
have easier time tokenizing and coloring the file. Comment
helps to understand that the file shouldn't be edited
manually.

The new format looks like this:

// This file is auto-generated with postcss-ts-classnames.

export type ClassNames =
  | "\32xl\:col-span-1"
  | "\32xl\:col-span-10"
  | "\32xl\:col-span-11"
  | "\32xl\:col-span-12"
  | "\32xl\:col-span-13"
  | "\32xl\:col-span-14"
  | "\32xl\:col-span-15"
  | "\32xl\:col-span-16";

Fixes #4.

[esamattis]

Thanks, released in https://github.com/esamattis/postcss-ts-classnames/releases/tag/v0.2.1

[aivenkimmob]

Great, thanks for the quick release! We can get rid of our sed magic :)

[aivenkimmob]

Just noticed there were also tests that I failed to fix in the PR, sorry about that!

[esamattis]

No worries, It seems this project is missing the "on pull request" event from the ci action.