ctk_compile_python_scripts: Fix Python3 DeprecationWarning using importlib
ctk_compile_python_scripts: Fix Python3 DeprecationWarning using importlib

This commit fixes warnings like the following:

  compile_CTKScriptingPythonCore_python_scripts.py:20: DeprecationWarning: the imp module is deprecated
  in favour of importlib; see the module's documentation for alternative uses

commontk/CTK,SINTEFMedtek/CTK,SINTEFMedtek/CTK,commontk/CTK,SINTEFMedtek/CTK,commontk/CTK,SINTEFMedtek/CTK,commontk/CTK,SINTEFMedtek/CTK