refactor: pcall require on nvim-treesitter.configs

`nvim-treesitter.configs` is going to be removed soon -- directly requiring it will cause an error once it has been removed.

lua/nvim-ts-autotag/config/plugin.lua

@@ -139,7 +139,7 @@ local Setup = {
     per_filetype = {},
 }
 
---- Do general plugin setup. Can be called multiple times to override values piecemeal.
+--- Do general plugin setup
 ---@param opts nvim-ts-autotag.PluginSetup
 function Setup.setup(opts)
     if Setup.did_setup then
@@ -147,8 +147,7 @@ function Setup.setup(opts)
     end
     if opts and not opts.opts then
         vim.notify(
-            "nvim-ts-autotag: Using the legacy setup opts! Please migrate to the new setup options layout as this will eventually have its support removed in 1.0.0!"
-                .. vim.inspect(Setup.did_setup),
+            "nvim-ts-autotag: Using the legacy setup opts! Please migrate to the new setup options layout as this will eventually have its support removed in 1.0.0!",
             vim.log.levels.WARN
         )
         opts = {

lua/nvim-ts-autotag/internal.lua

@@ -443,7 +443,12 @@ end
 M.attach = function(bufnr)
     bufnr = bufnr or vim.api.nvim_get_current_buf()
     if not Setup.did_setup then
-        local config = require("nvim-treesitter.configs").get_module("autotag")
+        local _, ts_configs = pcall(require, "nvim-treesitter.configs")
+        if not ts_configs then
+            M.setup({ opts = {} })
+        end
+
+        local config = ts_configs.get_module("autotag")
         Setup.setup(config)
     end