Apologies my last commit commented out the panic hook override by accident.

I normally disable this locally because I want the backtrace and my own format.

So I made it configurable.

BTW do we want the backtrace in the default miniquad output? I find it more useful than a simple single line crash. Here's what I use:

fn panic_hook(panic_info: &std::panic::PanicHookInfo) {
    error!("panic occurred: {panic_info}");
    error!("{}", std::backtrace::Backtrace::force_capture().to_string());
    std::process::abort()
}

Anyways this is my PR