Safe CSS Compression

[kai-orion]

Currently, most components use unsafeCSS, which results in their style files not being compressed.

A plugin is being planned to address this issue. This plugin will use the runtime result of the styles as the compiled result.

The expected workflow of the plugin is:

1. The developer writes the style file.
2. The plugin reads the style file.
3. The plugin virtually runs the style file and dumps the result.
4. The plugin uses the runtime result as the compiled result.