Yii2 CSS to asset folder

I have my site.css in my web/css/

which i declared here

namespace frontendassets;
use yiiwebAssetBundle;
class AppAsset extends AssetBundle
{
    public $basePath = '@webroot';
    public $baseUrl = '@web';
    public $css = [
        'css/site.min.css'
    ];
}

How do i get AssetBundle to copy it into the assets folder to make it look like this

<link href="/frontend/web/assets/2edj2hj2jk/css/site.css" rel="stylesheet">

instead of this?

<link href="/frontend/web/css/site.css" rel="stylesheet">

or is there another way to achieve this? Basically I want everything in web/css, web/images and web/js to be saved in the assets folder