refactor: centralise home-manager configs in system configs

configs/programs/hyprshade.nix

@@ -0,0 +1,25 @@
+{ inputs, pkgs, ... }:
+{
+  home-manager.users.rafiq = {
+    home.packages = [ pkgs.hyprshade ];
+    xdg.configFile."hypr/hyprshade.toml" = {
+      enable = true;
+      text = # toml
+        ''
+          [[shades]]
+          name = "vibrance"
+          default = true  # will be activated when no other shader is scheduled
+
+          [[shades]]
+          name = "blue-light-filter"
+          start_time = 22:00:00
+          end_time = 08:00:00   # optional if more than one shader has start_time
+        '';
+    };
+    xdg.configFile."hypr/shaders" = {
+      enable = true;
+      recursive = true;
+      source = "${inputs.hyprshaders}/shaders";
+    };
+  };
+}