Also set /displayarms, /displayhead and /visor for selecting gearsets

[SilentSwordmaiden]

Hey, I'd like to also select if weapons, helmets and visors are shown when applying a gearset with glam.

Maybe as a load for the api call where true means show, false means hide and not set just does the same as always?

message = {
    displayarms = true,
    displayhead = true,
    visor = true
}