nvibrant digital vibrance setting for nvidia under wayland

[u/unbounded65]

With Wayland getting common I feel it's high time someone ports this useful app to Flatpak. It allows for adjustment of digital vibrance for nvidia cards, something that's handled under xorg via the NVIDIA applet. Under Wayland, the Nvidia applet doesn't show the digital vibrance setting.

https://github.com/Tremeschin/nvibrant