Pico3 and 4 compatibility patch (0.251.3)

some pico3 steamvr mentioned there is a bug where that controller isn't being recognized. This patch resolves that. (though I can't test it as I can't connect my pico3 and have steamvr recognize it...)

So if anyone with a pico3 link that can connect to pcvr can confirm, I'd appreciate it :)

I've also added pico 4 steamvr compatibility (as far as Eleven is concerned)..so if they ever provide that functionality Eleven would work day 1 with it.