Generate Multimodule projects from STS

On Spring Roo 2.x we have included a new feature that allow developers to define projects like a "multimodule" project during project generation (ROO-3726)

This is possible on Spring Roo Shell including --multimodule parameter on project setup command.

project setup --topLevelPackage org.springframework.roo.multimodule --multimodule STANDARD

Now a days, with Spring Roo STS Plugin, developers are able to select the project type they want to generate. These types are:

• Standard
• Addon Simple
• Addon Advanced
• Spring Roo Addon Suite

We should update Spring Roo STS Plugin to include Multimodule Standard and Multimodule Basic types.

When that types will be selected, "project setup" command will include --multimodule parameter.

This functionality should check if "Selected Spring Roo Distribution" is 2.x. If developer is using Spring Roo 1.x, the plugin should open a new dialog with the following message:

You are trying to generate multimodule project, but this functionality is only available on Spring Roo 2.0+ versions. Please, install an Spring Roo 2.0+ distribution to continue