Adding which key

This will help freshers get used to keyboard shortcuts easily.

init.lua

@@ -25,6 +25,16 @@ require('packer').startup(function(use)
       'folke/neodev.nvim',
     },
   }
+    
+  use { -- WchickKey
+  "folke/which-key.nvim",
+  config = function()
+    vim.o.timeout = true
+    vim.o.timeoutlen = 300
+    require("which-key").setup {}
+  end
+  }
+
 
   use { -- Autocompletion
     'hrsh7th/nvim-cmp',