add zenmode

lua/plugins/zen-mode.lua

@@ -0,0 +1,12 @@
+return {
+  {
+    "folke/zen-mode.nvim",
+    cmd = "ZenMode",
+    keys = { { "<leader>z", "<cmd>ZenMode<cr>", desc = "Zen Mode" } },
+    opts = {
+      plugins = {
+        tmux = { enabled = true },
+      },
+    },
+  },
+}