refactor(flake-parts): initial flake-parts configuration

inputs/home/modules/desktop/wayland/windowManager/hyprland/pkgs/hyprbrightness.nix

@@ -0,0 +1,20 @@
+{ pkgs, ... }:
+
+pkgs.writeShellApplication {
+  name = "hyprbrightness";
+  runtimeInputs = with pkgs; [brillo libnotify];
+  text = ''
+    if [ "$1" == "up" ]; then
+      brillo -q -u 30000 -A 5
+    elif [ "$1" == "down" ]; then
+      brillo -q -u 30000 -U 5
+    else
+      echo "Invalid argument"
+      exit 1
+    fi
+
+    BRIGHTNESS=$(brillo -G | awk -F'.' '{print$1}')
+
+    notify-send --app-name="system-notify" -h string:x-canonical-private-synchronous:sys-notify "󰃠  $BRIGHTNESS%"
+  '';
+}