wip: move various programs to nix

nix/programs/hyprland/hyprgreet.nix

@@ -0,0 +1,23 @@
+{ ... }: {
+  xdg.configFile."hypr/hyprgreet.conf" = {
+    text =
+      ''
+        exec-once=gsettings set org.gnome.desktop.interface color-scheme 'prefer-dark'
+
+        monitor=DP-1,3440x1440@180,0x0,1
+        monitor=DP-2,disable
+        monitor=HDMI-A-1,disable
+
+        input {
+            force_no_accel = true
+        }
+
+        misc {
+            disable_splash_rendering = true
+            disable_hyprland_logo = true
+        }
+
+        exec-once=regreet --style /home/dashie/.config/gtk-3.0/gtk.css; hyprctl dispatch exit
+      '';
+  };
+}