Output close mapping

[ashton]

Hey there, when accessed via Summary, output pop up get focused and the only way of quitting it is to change to another window/buffer. I found that odd and kind of annoying, so I'm adding a configurable mapping (disabled by default, so we don't have any changes on the current behavior) for closing the output pop up when it is the current focused window / buffer.

[rcarriga]

Thanks for the PR but I'd rather not add another configuration option just for this. I have this in my config

  vim.api.nvim_create_autocmd("FileType", {
    pattern = "neotest-*",
    callback = function(opts)
      vim.keymap.set("n", "q", function() vim.api.nvim_win_close(0, true) end,
      { buffer = opts.buf, })
    end,
  })

and it covers the attach and summary windows too