Add support for key combinations

[cpguy5089]

(Small note: idk how to label this as enhancement)

Something I feel would be a good idea would be adding support for key combinations.
For example, if I pressed A it would show image 1, and if I pressed B it would show image 2, but if I pressed A and B at the same time it would show image 3.
Currently it doesn't have any way to even attempt doing this as far as I know.

I would add this functionality in myself but I don't know how to code whatsoever.