add "liferay learn" style sample project layout support to workspace

• Type: Task
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: Master
• Component/s: Dev Tools > Workspace
• Labels:
  • 7.3-devtools

We need to make sure that workspace is flexible and minimal enough to support "liferay learn" style project sample layouts.