Breathalyzing related API

Proposal Summary

Make a dedicated breathalyzing API.

Detailed Feature Description

Currently we do not have an API for breathalyzing. Having one would be great.

What we would want:

public static PedAlcoholLevel GetPedAlcoholLevel(Ped ped);

// Needs to refresh readings here
public static void SetPedAlcoholLevel(Ped ped, PedAlcoholLevel level);