Install zen mode

lua/plugins/zen_mode.lua

@@ -0,0 +1,19 @@
+return {
+  "folke/zen-mode.nvim",
+  config = function()
+    local map = LazyVim.safe_keymap_set
+
+    local cmd = function()
+      local zen = require("zen-mode")
+      zen.setup({
+        window = {
+          width = 140,
+          options = {},
+        },
+      })
+      zen.toggle()
+    end
+
+    map("n", "<leader>zz", cmd, { desc = "Toggle Zen Mode" })
+  end,
+}