add romgrk/barbar.nvim for filename tabs

lua/custom/plugins/filename_tabs.lua

@@ -0,0 +1,18 @@
+  return {
+
+  {
+  'romgrk/barbar.nvim',
+    dependencies = {
+      'lewis6991/gitsigns.nvim', -- OPTIONAL: for git status
+      'nvim-tree/nvim-web-devicons', -- OPTIONAL: for file icons
+    },
+    init = function() vim.g.barbar_auto_setup = false end,
+    opts = {
+      -- lazy.nvim will automatically call setup for you. put your options here, anything missing will use the default:
+      -- animation = true,
+      -- insert_at_start = true,
+      -- …etc.
+    },
+    version = '^1.0.0', -- optional: only update when a new 1.x version is released
+    }
+  }