Refactoring of "service" commands

Spring Roo 1.3.x offers some commands to manage service layer.

• Generates new services for all entities of current project

  roo> service all --interfacePackage --classPackage --useXmlConfiguration
  

• Generates new service for an specific entity.

  roo> service type --interface --class --entity --useXmlConfiguration
  

Update these command and its parameters to follow Spring Roo 2.x analysis.

New commands should be like the following:

• Generates new services for all entities of current project

  roo> service all --apiPackage --implPackage
  

• Generates new service for an specific entity.

  roo> service add --entity --interface