Project API/SPI for project and worskpaces manipulation.
The API defines Project and Workspace
interface. Most of modules will use these interfaces to watch
the application lifecycle. The API therefore define the
WorkspaceListener interface, which is essential for tracking
workspace events. The ProjectController service manage
the system.
The SPI notably defines how modules can interact more with the
worspace lifecyle. See WorkspacePersistenceProvider for
project saving/loading.