added buffer tabs

lua/custom/plugins/bufferline.lua

@@ -0,0 +1,8 @@
+return {
+  'akinsho/bufferline.nvim',
+  version = "*",
+  dependencies = 'nvim-tree/nvim-web-devicons',
+  config = function()
+    require("bufferline").setup{}
+  end
+}