add feature for Memory Card B

[Augusto7743]

Thanks for reading that topic.

Dolphin core only support one memory card slot (Card A) ?
I not see if is possible read an secondary memory card (Card B) thus as does Dolphin Emulator.
If not is possible ... please add feature to allow memory card B.

Resident Evil allow only 5 saves slots in each memory card.
Having 2 memory cards is possible save more areas checkpoint.

Have an nice day.