Taxi Stunting script should also print non-records

[JayFoxRox]

I often wonder how high other people got.

Until we have is-on-ground detection we can't do this because we'd just see a lot of log spam with many records.

It would be cool to have /last_height <username/id> to see how high people got recently. Or maybe /best_height <username/id> to see their personal best (which could also be printed).

We could also consider a /show_height <username/id> which always displays the current height of a player somewhere in the HUD (as client script ideally).