Macro rrplug::call_sq_function

macro_rules! call_sq_function {
    ($sqvm:expr, $sqfunctions:expr, $function_name:expr, $( $arg:expr ),* ) => { ... };
}

“safely” calls any function defined on the sqvm

this should only be called on the tf2 thread aka when concommands, convars, sqfunctions, runframe

macro version of call_sq_function, used to call a function with args returns Result<(), CallError>