Improved the implementation for the CreateFolderTask task in the library target.

Library/Sources/Internal/Enumerations/Folder.swift

@@ -0,0 +1,12 @@
+enum Folder: String {
+    case app = "App/Sources"
+    case libraryPublic = "Library/Sources/Public"
+    case libraryInternal = "Library/Sources/Internal"
+    case testCasesPublic = "Test/Sources/Cases/Public"
+    case testCasesInternal = "Test/Sources/Cases/Internal"
+    case testHelpers = "Test/Sources/Helpers"
+}
+
+// MARK: - CaseIterable
+
+extension Folder: CaseIterable {}