fix: disabling autosave wouldn't work (#28)

lua/auto-save/utils/autocommands.lua

@@ -4,9 +4,10 @@ local api = vim.api
 local augroup_name = "AutoSave"
 
 --- @param opts? table
+--- @return number
 M.create_augroup = function(opts)
-  opts = opts or {}
-  api.nvim_create_augroup(augroup_name, opts)
+  opts = opts or { clear = true }
+  return api.nvim_create_augroup(augroup_name, opts)
 end
 
 --- @param pattern string