Dist-10392 add logging functionality

[mukteshd]

Add logging in muffin gem. Use Rails logger if the gem is used in rails app or use default ruby logger
Allow enabling of error and info logging Amazon request and response

[pp-surbhigupta]

can we add this in call_api so that any api calls can use this and add enableLogging module wise?

[mukteshd]

done

[natesalisbury]

Instead of making this gem aware of rails, we can add support for the application using the gem to set a logger. Like how Rails supports doing Rails.logger = Logger.new. To do this you can add :logger as an attr_accessor like we have done for :configuration on this line

  class << self
    attr_accessor :configuration, :logger
  end

Then we can use the logger set by the application if one is set with

MuffinMan.logger.info "a message for the logs"

If no logger is set, I wonder if we default to Logger.new("/dev/null") so that nothing actually gets logged but we can still write code assuming MuffinMan.logger is always set.