[Maintainer] Implement the "Simple" and "Advanced" modes for the episode converter

[Wohlstand]

We need to make the interface of the episode converter more friendly for newbies. And therefore we need to make two modes:

• Simple mode: A user will need to select one of the predefined templates for the most popular cases to get their desired target (store these templates at the INI file(s)).
• Advanced mode: A user will be able to select every accessible property explicitly.