Attempt to index field 'buffers' (a nil value) error.

[hsanson]

Thanks for the great plugin. I found out that if we don't call setup() function when configuring the plugin, then the buffers array in autosave is nil. This results in the following error whenever we try to invoke an action that access that variable:

E5108: Error executing lua: ...l/share/nvim/lazy/autosave.nvim/lua/autosave/actions.lua:61: attempt to index field 'buffers' (a nil value)       
stack traceback:                                                                                                                                       
        ...l/share/nvim/lazy/autosave.nvim/lua/autosave/actions.lua:61: in function 'buf_enable'

To replicate configure the plugin using Lazy.nvim with default values as below:

{
  'nullishamy/autosave.nvim',
  lazy = true
}

Open any document and try to enable autosave using the buf_enable() action:

:lua require('autosave.actions').buf_enable()

See the attempt to index field 'buffers' (a nil value)' appears. If we call setup({}) before calling the action then everything works as expected.