Query the size of the result set and choose between stream_one and stream_many accordingly

stream.ex

@spec stream(ES.query_t(), ES.index_t(), ES.consumer_t()) :: {:ok, any()} | {:error, any()}
def stream(query, index, consumer) do
  case count(query, index) do
    {:ok, count} ->
      if count > ES.max_results() do
        stream_many(query, index, consumer, count)
      else
        stream_one(query, index, consumer)
      end
    error ->
      error
  end
end