Fail the build with a helpful error message if there are no modules found containing marker files

• Type: Task
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: None
• Component/s: Dev Tools > Portal Build Env
• Labels: None

Currently, the build will fail near the end of the build-app process with an error stating that the "dist" folder doesn't exist. This is confusing for most people because it doesn't clearly indicate what the problem really is.