feat: add wivrn and nixpkgs-xr inputs and update related configs

nixos/ryu/services/wivrn.nix

@@ -1,8 +1,9 @@
-{...}: {
+{pkgs, ...}: {
   services.wivrn = {
     enable = true;
     openFirewall = true;
     defaultRuntime = true;
     autoStart = true;
+    package = pkgs.wivrn;
   };
 }