[feat] Add catppuccin theme getter

config/nix/themes/catppuccin.nix

@@ -0,0 +1,26 @@
+{ pkgs, flavor, ... }:
+let
+  mkCatppuccin = { owner ? "catppuccin", item, rev ? "main", sha256 ? pkgs.lib.fakeSha256 }:
+    pkgs.stdenv.mkDerivation {
+      pname = item;
+      version = "0.0.1";
+      src = pkgs.fetchFromGitHub {
+        inherit owner rev sha256;
+        repo = item;
+      };
+    };
+in
+{
+
+  bat = mkCatppuccin {
+    item = "bat";
+  };
+
+  hyprland = mkCatppuccin {
+    item = "hyprland";
+  };
+
+  starship = mkCatppuccin {
+    item = "starship";
+  };
+}