Common/programs/btop: add catppuccin theme

roles/common/programs/btop.nix

@@ -1,10 +1,26 @@
-{ ... }:
+{ pkgs, ... }:
+let
+  catppuccinBtop = pkgs.fetchFromGitHub {
+    owner = "catppuccin";
+    repo = "btop";
+    # I know fetiching from master is not best practice but idc this is not going to change often
+    # Latest commit rn is c6469190f2ecf25f017d6120bf4e050e6b1d17af
+    rev = "master";
+    hash = "sha256-jodJl4f2T9ViNqsY9fk8IV62CrpC5hy7WK3aRpu70Cs=";
+};
 
+in
 {
   home-manager = {
     users.toast = {
       programs.btop = {
         enable = true;
+        settings = {
+          color_theme = "catppuccin_mocha";
+        };
+      };
+      xdg.configFile = {
+        "btop/themes".source = "${catppuccinBtop}/themes";
       };
     };
   };