[feat] Restructure the repo

linux/gtk.nix

@@ -0,0 +1,26 @@
+{ pkgs, ... }: {
+  gtk = {
+    enable = true;
+    theme = {
+      name = "Catppuccin-Mocha-Standard-Mauve-Dark";
+      package = pkgs.catppuccin-gtk.override {
+        variant = "mocha";
+        size = "standard";
+        accents = [ "mauve" ];
+        tweaks = [ "normal" ];
+      };
+    };
+
+    iconTheme = {
+      name = "Papirus-Dark";
+      package = pkgs.catppuccin-papirus-folders.override {
+        accent = "mauve";
+        flavor = "mocha";
+      };
+    };
+
+    gtk3.extraConfig = { gtk-application-prefer-dark-theme = 1; };
+
+    gtk4.extraConfig = { gtk-application-prefer-dark-theme = 1; };
+  };
+}