OS Selector without Graphics

[DRx3D]

When the OS is identified without a graphics system (e.g., https://openxr-tutorial.com//windows/) the web server generates a 403 error. This page should redirect to .../vulkan. The solution could be a .htaccess file that redirects URLs using mod_rewrite, a redirect HTML page, or about 20 other mechanisms.

[AndrewRichards-Code]

c7e93b9 and a444de5 resolve this issue by adding a redirect index.html file in the OS folder of the site build.