add polymouth animation

system/modules/plymouth.nix

@@ -0,0 +1,22 @@
+{ pkgs, ... }: {
+  boot = {
+    plymouth = {
+      enable = true;
+      theme = "catppuccin-frappe";
+      themePackages = with pkgs; [
+        (adi1090x-plymouth-themes.override {
+          selected_themes = [ "motion" ];
+        })
+        (catppuccin-plymouth.override {
+          variant = "frappe";
+        }
+        )
+      ];
+    };
+
+    consoleLogLevel = 0;
+    initrd.verbose = false;
+    kernelParams = [ "quiet" "splash" "boot.shell_on_fail" "loglevel=3" "rd.systemd.show_status=false" "rd.udev.log_level=3" "udev.log_priority=3" ];
+    loader.timeout = 0;
+  };
+}