feat(k8s): add enable option

home/modules/k8s/k9s.nix

@@ -1,10 +1,23 @@
 {
-  programs.k9s = {
-    enable = true;
-    settings.k9s = {
-      ui = {
-        logoless = true;
-        reactive = true;
+  config,
+  lib,
+  ...
+}:
+
+let
+  cfg = config.k8s.k9s;
+in
+{
+  options.k8s.k9s.enable = lib.mkEnableOption "";
+
+  config = lib.mkIf cfg.enable {
+    programs.k9s = {
+      enable = true;
+      settings.k9s = {
+        ui = {
+          logoless = true;
+          reactive = true;
+        };
       };
     };
   };