tests/cpydiff/core_import_path: Test showing difference in package.__path__.

tests/cpydiff/core_import_path.py

+"""
+categories: Core,import
+description: __path__ attribute of a package has a different type (single string instead of list of strings) in MicroPython
+cause: MicroPython does't support namespace packages split across filesystem. Beyond that, MicroPython's import system is highly optimized for minimal memory usage.
+workaround: Details of import handling is inherently implementation dependent. Don't rely on such details in portable applications.
+"""
+import modules
+
+print(modules.__path__)