separated plugins configs and added couple new plugins

lua/custom/plugins/which-key.lua

@@ -1,4 +1,13 @@
 return {
-  'folke/which-key.nvim',
-  opts = {}
+  "folke/which-key.nvim",
+  event = "VeryLazy",
+  init = function()
+    vim.o.timeout = true
+    vim.o.timeoutlen = 300
+  end,
+  opts = {
+    -- your configuration comes here
+    -- or leave it empty to use the default settings
+    -- refer to the configuration section below
+  }
 }