Add Z button to the list of buttons.

[luluco250]

I use mods which bind X to drop dash, Y to lightspeed dash and B to bounce, so I needed another button for super transformation.

It turns out Buttons_Z maps to R1/RB as you'd expect, like on a GameCube controller.

I've tested this on my end by replacing the installed mod's DLL and PDB, then manually modifying the configschema.xml to add the extra button and it seems to work correctly.

I couldn't find that schema file on the repo so I assume you maintain it elsewhere.

It's worth noting that I had to turn off "whole program optimization" on my end otherwise VS2022 would complain about "incompatible compilers" between the mod and the mod loader library. I'm guessing this is related to the different SDK versions, XP compatibility or something like that.

I chose not to commit that change since the actual change is only on the code, but I thought you should know.