Additional driver streams, Fedora releases, runtime libraries, and more for Nvidia images

[joshua-stone]

Hey everyone,

A lot of progress on the ublue-os Nvidia images has been made since our initial announcement! Here's a summary of improvements:

• Simpler local build process using a separate test signing key
• Rootless podman CUDA support
• Hardware-accelerated video playback with vaapi
• Support for Fedora 38
• Support for Kinoite (KDE), Vauxite (XFCE), Sericea (Sway), and Base (no desktop environment) images
• Support for 520xx and 470xx driver streams

Feel free to post feedback about your experiences with these images, and please file issues if you'd like to see more enhancements added to improve out-of-the-box Nvidia support!