Refactoring the JPA Commands

The idea is to refactor the JPA commands (under org.jboss.forge.addon.javaee.jpa.ui) :

• Add an interface with all the default sub-packages in javaee-api
  • Interface org.jboss.forge.addon.javaee.JavaEEPackages
  • Something like BUSINESS_MODEL would be model
  • BUSINESS_LOGIC would be service
  • EXCEPTIONS would be exception
• Create a new org.jboss.forge.addon.javaee.jpa.ui.AbstractJPACommand that extends AbstractJavaEECommand and implements PrerequisiteCommandsProvider
  • getMetadata By adding JPA (and this way each command will be "Java EE / JPA / New Embeddable"
  • isProjectRequired
  • getPrerequisiteCommands
  • Add a method calculateDefaultPackage
• Refactor the classes
  • They extend from AbstractJPACommand
  • Rename them by prefixing them with JPA
    • NewEmbeddableCommand -> JPANewEmbeddableCommand
    • NewEntityCommand -> JPANewEntityCommand
    • ...

Questions : some classes redifine named and targetPackage some don't, why ? :

   @Inject
   @WithAttributes(label = "Entity name", description = "The simple name of the generated class", required = true)
   private UIInput<String> named;

   @Inject
   @WithAttributes(label = "Target package", type = InputType.JAVA_PACKAGE_PICKER)
   private UIInput<String> targetPackage;