BasePath
Represents a subpath under which the user's entire site is served under.
Its value is always normalized to begin and end with a slash if set (e.g. "/prefix/").
This class is useful to handle the cases where a Kobweb site is rooted under some known nested subfolder. Once configured, Kobweb APIs can handle prepending it automatically on the user's behalf. This is useful in cases where relative paths can't easily be used, e.g. using "/" from anywhere in your site as a link to go back to the home page.
This class is essentially an immutable singleton - it is global to the site, and, once set, it cannot be changed.