GUI: Added a note for TAN input with optical data.
New GWEN_GUI_PASSWORD_METHOD enums will only be created for
fundamentally different entry methods.
Defining enums for AqBanking in Gwenhywfar doesn't make sense, so we will keep
using GWEN_Gui_PasswordMethod_OpticalHHD for all optical method like:
- chipTAN (manuell)
- chipTAN (optisch)
- chipTAN QR
To allow the implementation to determine which subtype is to be used
AqBanking uses a DB subgroup called "tanMethod" inside the methodParams
(e.g. "tanMethod/methodId", contains valuse like "HHD1.3.0OPT" and others).