Add tabwidth options and golang stuff

lua/custom/plugins/go.lua

@@ -0,0 +1,17 @@
+local M = {
+  'ray-x/go.nvim',
+  dependencies = { -- optional packages
+    'ray-x/guihua.lua',
+    'neovim/nvim-lspconfig',
+    'nvim-treesitter/nvim-treesitter',
+  },
+  ft = { 'go', 'gomod' },
+  build = ':lua require("go.install").update_all_sync()', -- if you need to install/update all binaries
+}
+
+function M.config()
+  -- setup your go.nvim
+  require('go').setup({})
+end
+
+return M