Add plug-in feature

[winebarrel]

🙇

# any_gem/lib/arproxy/plugin/my_plugin
module Arproxy::Plugin
  class MyPlugin < Arproxy::Base
    Arproxy::Plugin.register(:my_plugin, self)

    def execute(sql, name=nil)
      # Any processing
    end
  end
end

Arproxy.configure do |config|
  config.plugin :my_plugin
end

[winebarrel]

@mirakui ping

[mirakui]

thanks!

[mirakui]

released as 0.2.0

[winebarrel]

Thank you for merging 🙇