Add plymouth to modules

modules/programs/default.nix

@@ -28,6 +28,7 @@
     ./nextcloud.nix
     ./oxi
     ./piper.nix
+    ./plymouth.nix
     ./printing.nix
     ./scripts.nix
     ./sddm.nix

modules/programs/plymouth.nix

@@ -0,0 +1,19 @@
+{
+  lib,
+  config,
+  options,
+  ...
+}:
+{
+  options.mods.plymouth = {
+    enable = lib.mkOption {
+      default = true;
+      example = false;
+      type = lib.types.bool;
+      description = "Enables the plymouth";
+    };
+  };
+  config = lib.mkIf config.mods.plymouth.enable (
+    lib.optionalAttrs (options ? boot.plymouth) { boot.plymouth.enable = true; }
+  );
+}