Provides support for importing projects into the workspace from a repository.
A bundle manifest may contain information identifying source code for the bundle
or a project in a repository associated with the bundle. Clients may contribute
implementations of org.eclipse.pde.core.importing.IBundleImporterDelegate
to the org.eclipse.pde.core.bundleImporters
extension point to participate
in the import of bundles into workspace projects based on bundle manifests.