Move webroot after ENV definition, so it can vary based on ENV

[Beee4life]

Suggestion to move the $webroot definition after WP_ENV has been defined, so you can use a different web root folder, based on the WP_ENV value.

Example: Locally my public html folder is always called /web but my server has set /public_html as web root. So I always change it to this:

$webroot_dir = 'development' === WP_ENV ? $root_dir . '/web' : $root_dir . '/public_html';