In some environments, depending on the Node version importing a `.json`
file without a `with` or `assert` doesn't work.
Let's play it safe and use an `fs.readFileSync` instead.
* move `cli` to its own package `@tailwindcss/cli`
* minify builds when using `tsup`
* prefer tsup cli flag over tsup.config.ts file
* add `--clean`, to make sure `dist/` folders are cleaned before building
* make CLI esm only
* use version of `tailwindcss` instead of the version of `@tailwindcss/cli`
* only output `@property foo` once instead of N times
* compute the indent once
* improve performance by using strings and for-loops
* drop unnecessary new line
The pretty printing is fairly basic, but it adds some space between
properties `color: red;`, adds newlines after `;`, `{`, and `}`.
Last but not least, it indents nested CSS based on depth with 2 spaces.
